panasonic corporation automation controls business unit industrial.panasonic.com/ac/e/ nc asctb12e 201209-t ordering information transistor drive 2c/4c 5a slim power relays nc relays nc4 flat type (pc board type) nc2 flat type (pc board type) nc4 slim type (plug-in type) nc2 slim type (pc board type) rohs compliant features 1. compact, slim design use of high-performance ?t electromagnetic design achieves 10.9 mm .429 inch pro?e, ?t type thin package. slim type, with width of 11.2 mm .441 inch , enables high-density mounting on pc boards. 2. high reliability provides stable contact pressure needed f or card lift-off contact driver method. the use of ac clad twin contacts provides stable contact resistance and ensures high contact reliability. 3. compatible with all major safety standards ul and csa certi?d, and complies with japanese electrical appliance and material control law. 4. socket and terminal are available. typical applications 1. information processing and telecom equipment such as computers and terminal devices. 2. gas hot air heating equipment and air conditioners. 3. timer, temperature controller and other equipment that requires form factor reduction. 4. transmission and measuring devices such as facsimile machines and electronic counting devices. 5. control panels for industrial equipment such as machine tools, factory automation devices, and nc machines. 2: 2 form c 4: 4 form c d: twin (bifurcated) contact nc d nil: eb: standard type amber sealed type nil: j: slim type flat type nil: single side stable nil: p: plug-in type pc board type nominal coil voltage dc ac 3, 5, 6, 12, 24, 48, 100v 12, 24, 48, 100v notes: 1. certified by ul and csa 2. amber sealed types are sealed and filled with inert gas (nitrogen gas). sealed construction with terminals, case and base sealed shut with sealing resin.
panasonic corporation automation controls business unit industrial.panasonic.com/ac/e/ nc asctb12e 201209-t types 1. standard type 1) flat type standard packing: carton: 20 pcs.; case: 200 pcs. 2) slim type standard packing: carton: 20 pcs.; case: 200 pcs. contact arrangement nominal coil voltage pc board type part no. 2 form c 12v ac nc2d-jp-ac12v 24v ac nc2d-jp-ac24v 48v ac nc2d-jp-ac48v 100v ac nc2d-jp-ac100v 3v dc nc2d-jp-dc3v 5v dc nc2d-jp-dc5v 6v dc nc2d-jp-dc6v 12v dc nc2d-jp-dc12v 24v dc nc2d-jp-dc24v 48v dc nc2d-jp-dc48v 100v dc nc2d-jp-dc100v 4 form c 12v ac nc4d-jp-ac12v 24v ac nc4d-jp-ac24v 48v ac nc4d-jp-ac48v 100v ac nc4d-jp-ac100v 3v dc nc4d-jp-dc3v 5v dc nc4d-jp-dc5v 6v dc nc4d-jp-dc6v 12v dc nc4d-jp-dc12v 24v dc nc4d-jp-dc24v 48v dc nc4d-jp-dc48v 100v dc nc4d-jp-dc100v contact arrangement nominal coil voltage plug-in type pc board type part no. part no. 2 form c 12v ac nc2d-ac12v nc2d-p-ac12v 24v ac nc2d-ac24v nc2d-p-ac24v 48v ac nc2d-ac48v nc2d-p-ac48v 100v ac nc2d-ac100v nc2d-p-ac100v 3v dc nc2d-dc3v nc2d-p-dc3v 5v dc nc2d-dc5v nc2d-p-dc5v 6v dc nc2d-dc6v nc2d-p-dc6v 12v dc nc2d-dc12v nc2d-p-dc12v 24v dc nc2d-dc24v nc2d-p-dc24v 48v dc nc2d-dc48v nc2d-p-dc48v 100v dc nc2d-dc100v nc2d-p-dc100v 4 form c 12v ac nc4d-ac12v nc4d-p-ac12v 24v ac nc4d-ac24v nc4d-p-ac24v 48v ac nc4d-ac48v nc4d-p-ac48v 100v ac nc4d-ac100v nc4d-p-ac100v 3v dc nc4d-dc3v nc4d-p-dc3v 5v dc nc4d-dc5v nc4d-p-dc5v 6v dc nc4d-dc6v nc4d-p-dc6v 12v dc nc4d-dc12v nc4d-p-dc12v 24v dc nc4d-dc24v nc4d-p-dc24v 48v dc nc4d-dc48v nc4d-p-dc48v 100v dc nc4d-dc100v nc4d-p-dc100v
panasonic corporation automation controls business unit industrial.panasonic.com/ac/e/ nc asctb12e 201209-t 2. amber type 1) flat type standard packing: carton: 20 pcs.; case: 200 pcs. 2) slim type standard packing: carton: 20 pcs.; case: 200 pcs. * for sockets, see page 76. rating 1. coil data 1) single side stable type (ac) contact arrangement nominal coil voltage pc board type part no. 2 form c 3v dc nc2ebd-jp-dc3v 5v dc nc2ebd-jp-dc5v 6v dc nc2ebd-jp-dc6v 12v dc nc2ebd-jp-dc12v 24v dc nc2ebd-jp-dc24v 48v dc nc2ebd-jp-dc48v 100v dc nc2ebd-jp-dc100v 4 form c 3v dc nc4ebd-jp-dc3v 5v dc nc4ebd-jp-dc5v 6v dc nc4ebd-jp-dc6v 12v dc nc4ebd-jp-dc12v 24v dc nc4ebd-jp-dc24v 48v dc nc4ebd-jp-dc48v 100v dc nc4ebd-jp-dc100v contact arrangement nominal coil voltage plug-in type pc board type part no. part no. 2 form c 3v dc nc2ebd-dc3v nc2ebd-p-dc3v 5v dc nc2ebd-dc5v nc2ebd-p-dc5v 6v dc nc2ebd-dc6v nc2ebd-p-dc6v 12v dc nc2ebd-dc12v nc2ebd-p-dc12v 24v dc nc2ebd-dc24v nc2ebd-p-dc24v 48v dc nc2ebd-dc48v nc2ebd-p-dc48v 100v dc NC2EBD-DC100V nc2ebd-p-dc100v 4 form c 3v dc nc4ebd-dc3v nc4ebd-p-dc3v 5v dc nc4ebd-dc5v nc4ebd-p-dc5v 6v dc nc4ebd-dc6v nc4ebd-p-dc6v 12v dc nc4ebd-dc12v nc4ebd-p-dc12v 24v dc nc4ebd-dc24v nc4ebd-p-dc24v 48v dc nc4ebd-dc48v nc4ebd-p-dc48v 100v dc nc4ebd-dc100v nc4ebd-p-dc100v no. of poles nominal coil voltage pick-up voltage (at 20 c 68f) drop-out voltage (at 20 c 68f) nominal operating current [ 10%] (at 20 c 68f) coil inductance nominal operating power max. applied voltage (at 50 c 122 f) n.c. condition n.o. condition 2 form c 12v ac 80%v or less of nominal voltage (initial) 10%v or more of nominal voltage (initial) 41.5ma 0.50va 110%v of nominal voltage 24v ac 22.5ma 0.54va 48v ac 14.0ma 0.67va 100v ac 10.5ma 1.05va 4 form c 12v ac 80%v or less of nominal voltage (initial) 10%v or more of nominal voltage (initial) 92ma 1.10va 110%v of nominal voltage 24v ac 45ma 1.08va 48v ac 22.5ma 1.08va 100v ac 13.0ma 1.30va
panasonic corporation automation controls business unit industrial.panasonic.com/ac/e/ nc asctb12e 201209-t 2) single side stable (dc) * at 20 c 68f (amber type) 2. speci?ations notes: *1 this value can change due to the switching frequency, environmental conditions, and desired reliability level, therefore it is recommended to check this with the actual load. *2. 100v dc: 740mw *3. for the ac type, the operate and release time differs depending on the phase of the input and cutoff times. *4. the upper limit of the ambient temperature is the maximum temperature that can satisfy the coil temperature rise value. refer to usage, transport and storage conditions in notes. *5. 100v a c: ?0 c to +40 c ?0 f to +104 f no. of poles nominal coil voltage pick-up voltage (at 20 c 68f) drop-out voltage (at 20 c 68f) nominal operating current [ 10%] (at 20 c 68f) coil resistance [10%] (at 20 c 68f) nominal operating power coil inductance max. applied voltage (at 50 c 122f)* n.c. condition n.o. condition 2 form c 3v dc 80%v or less of nominal voltage (initial) 10%v or more of nominal voltage (initial) 120ma 25 ? 360mw 24.2mh 30.0mh 135%v of nominal voltage 5v dc 72ma 69.4 ? 360mw 69.5mh 86.0mh 6v dc 60ma 100 ? 360mw 99.4mh 123mh 12v dc 30ma 400 ? 360mw 388mh 480mh 24v dc 15ma 1,600 ? 360mw 1,590mh 1,970mh 48v dc 7.5ma 6,400 ? 360mw 6,270mh 7,680mh 100v dc 7.4ma 13,500 ? 740mw 9,470mh 11,700mh 110%v of nominal voltage 4 form c 3v dc 80%v or less of nominal voltage (initial) 10%v or more of nominal voltage (initial) 240ma 12.5 ? 720mw 12.8mh 15.8mh 110%v of nominal voltage 5v dc 144ma 34.7 ? 720mw 34.3mh 42.4mh 6v dc 120ma 50 ? 720mw 50.7mh 62.7mh 12v dc 60ma 200 ? 720mw 203mh 252mh 24v dc 30ma 800 ? 720mw 812mh 1,000mh 48v dc 15ma 3,200 ? 720mw 2,820mh 3,480mh 100v dc 7.4ma 13,500 ? 740mw 14,100mh 17,400mh characteristics item speci?ations dc ac dc ac single side stable single side stable single side stable single side stable contact arrangement 2 form c 4 form c contact resistance (initial) max. 50 m ? (by voltage drop 6 v dc 1a) max. 50 m ? (by voltage drop 6 v dc 1a) contact material au-clad agni type au-clad agni type rating nominal switching capacity (resistive load) standard: 5a 250v ac, 5a 30v dc amber: 3a 250v ac, 5a 30v dc standard: 4a 250v ac, 5a 30v dc amber: 2a 250v ac, 5a 30v dc max. switching power (resistive load) standard: 1,250va, 150w amber: 750va, 150w standard: 1,000va, 150w amber: 500va, 150w max. switching voltage 250 v ac max. switching current standard: 5a amber: 3a (ac), 5a (dc) standard: 4a amber: 2a (ac), 5a (dc) nominal operating power 360mw (740mw: 100v dc) 0.50va to 1.05va 720mw* 2 1.08va to 1.30va min. switching capacity (reference value)* 1 100a 1v dc 100 a 1vdc electrical characteristics insulation resistance (initial) min. 100m ? (at 500v dc) measurement at same location as ?reakdown voltage section. breakdown voltage (initial) between open contacts 1,000 vrms for 1min. (detection current: 10ma.) between contact sets 1,000 vrms for 1min. (detection current: 10ma.) between contact and coil 2,000 vrms for 1min. (detection current: 10ma.) temperature rise (coil) max. 65 c [max. 85 c (100v ac)] (by resistive method, nominal coil voltage) operate time (at 20 c 68f ) max. 20ms max. 30ms* 3 max. 20ms max. 30ms* 3 release time (at 20 c 68f ) max. 10ms max. 40ms* 3 max. 10ms max. 40ms* 3 mechanical characteristics shock resistance functional min. 98 m/s 2 (half-wave pulse of sine wave: 11 ms; detection time: 10 s.) destructive min. 980 m/s 2 (half-wave pulse of sine wave: 6 ms.) vibration resistance functional 10 to 55 hz at double amplitude of 1 mm (detection time: 10 s.) destructive 10 to 55 hz at double amplitude of 2 mm expected life mechanical min. 5 10 7 min. 10 7 min. 5 10 7 min. 10 7 electrical (resistive load) standard: min. 10 5 (5a 250v ac), min. 5 10 5 (5a 30v dc) amber: min. 10 5 (3a 250v ac), min. 5 10 5 (5a 30v dc) standard: min. 10 5 (4a 250v ac), min. 5 10 5 (5a 30v dc) amber: min. 10 5 (2a 250v ac), min. 5 10 5 (5a 30v dc) conditions conditions for operation, transport and storage* 4 (not freezing and condensing at low temperature) ?0c to +70 c ?0f to +158 f (max.48v dc), ?0c to +55 c ?0f to +131 f (100v dc) ?0c to +60 c ?0f to +140 f* 5 ?0c to +55 c ?0f to +131 f ?0c to +40 c ?0f to +104 f max. operating speed 50 cps unit weight 16 g .56 oz 18 g .63 oz
panasonic corporation automation controls business unit industrial.panasonic.com/ac/e/ nc asctb12e 201209-t reference data (standard type) 1.-(1) life curve (ac/dc load 2 form c, 4 form c) 1.-(2) life curve (ac/dc load 2 form c) 1.-(3) life curve (ac/dc load 4 form c) contact carrying current, a expected life, 10 4 0.1 1.0 10 100 1,000 10,000 220 v dc resistive 110 v dc resistive 30 v dc resistive contact carrying current, a expected life, 10 4 100 10 0 1,000 5,000 1 2345 250 v ac resistive 250 v ac inductive (pf=0.4) contact carrying current, a expected life, 10 4 100 10 0 1,000 5,000 125 v ac resistive 250 v ac resistive 125 v ac inductive (pf=0.4) 250 v ac inductive (pf=0.4) 12345 2. temperature rise characteristics (single side stable) measured portion: inside the coil 3. operate time (single side stable) 4. release time (single side stable) 20 30 40 50 60 70 80 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8w 100 120 140 160 180 200 220%v 100 110 120 130 140 150%v 5 a (contact carring current) 3 a (contact carring current) 4c 2c temperature rise, c operating power coil voltage 2c : up to 48 v dc 2c : 100 v dc 4c : all types ) ) ( ( 5 a (contact carring current) 3 a (contact carring current) coil applied voltage,%v operate time, ms 4 2 10 6 8 12 16 14 18 20 80 100 90 110 min. max. 4c 2c min. max. coil applied voltage,%v release time, ms 5 4 3 2 1 80 100 90 110 4c 2c max. min. max. min. 5.-(1) rate of change of pick-up and drop-out voltage (2 form c single side stable) 5.-(2) rate of change of pick-up and drop-out voltage (4 form c single side stable) 100 ?0 ?0 0 20 40 60 80 80 90 110 120 ambient temperature, c drop-out voltage pick-up voltage rated of change, % 100 ?0 ?0 0 20 40 60 80 80 90 110 120 ambient temperature, c drop-out voltage pick-up voltage rated of change, % 6.-(1) ambient temperature vs max. applied voltage t ested sample: nc2d-p-dc24 v (2 form c slim single side stable) 6.-(2) ambient temperature vs max. applied voltage t ested sample: nc2d-p-dc110 v (2 form c slim single side stable), nc4d-p-dc24 v (4 form c slim single side stable) 100 150 200 250 ambient temperature, c 40 50 60 70 max. applied voltage, %v 0 a (contact carring current) 3 a (contact carring current) 5 a (contact carring current) 30 40 50 100 150 200 250 ambient temperature, c max. applied voltage, %v 0 a (contact carring current) 3 a (contact carring current) 5 a (contact carring current)
panasonic corporation automation controls business unit industrial.panasonic.com/ac/e/ nc asctb12e 201209-t dimensions (mm inch) the cad data of the products with a cad data mark can be downloaded from: http://industrial.panasonic.com/ac/e/ flat type 2 form c external dimensions 0.8 .031 .200 .200 .200 5.08 5.08 5.08 25.4 1.000 25.4 27.94 1.000 1.100 10.9 3.5 .429 .138 .016 0.4 schematic (top view) single side stable (deenergized position) pc board pattern (bottom view) single side stable 14 13 12 11 2457 ? .110 dia. 2.8 dia. 8-.047 dia. hole 8-1.2 dia. hole 2.54 11 .100 11 2.54 .100 11 12 13 14 754 2 2.54 .100 cad data flat type 4 form c external dimensions 38.1 1.500 25.4 27.94 1.000 1.100 10.9 3.5 .429 .138 .016 0.4 0.8 .031 2.54 2.54 5.08 5.08 .100 .100 .200 .200 5.08 .200 5.08 5.08 .200 .200 .200 5.08 .200 5.08 .200 5.08 .200 5.08 .200 5.08 .200 5.08 .200 5.08 schematic (top view) single side stable (deenergized position) pc board pattern (bottom view) single side stable 141516 13 12 11 10 9 12 4 578 ? 87 54 21 910111213141516 14-.047 dia. hole 14-1.2 dia. hole .110 dia. 2.8 dia. 2.54 .100 2.54 .100 2.54 11 .100 11 cad data slim type plug-in type 2 form c external dimensions 5.08 5.08 5.08 .200 .200 .200 2.54 2.54 .100 .100 0.8 2.5 .031 .098 25.4 1.000 .200 .200 .200 5.08 5.08 5.08 11 12 13 14 765432 27.8 1.094 6.1 .240 0.4 .016 0.4 .016 7.62 .300 11.2 .441 schematic (bottom view) single side stable (deenergized position) 11 12 13 14 7542 + cad data
panasonic corporation automation controls business unit industrial.panasonic.com/ac/e/ nc asctb12e 201209-t slim type plug-in type 4 form c external dimensions 38.1 1.500 5.08 .200 5.08 .200 5.08 .200 5.08 .200 5.08 .200 5.08 .200 5.08 .200 5.08 5.085.08 5.08 5.08 .200 .200.200 .200 .200 10 11 12 13 14 15 16 9 87654321 2.54 2.54 .100 .100 27.8 1.094 6.1 .240 0.4 7.62 .300 11.2 .441 0.4 .016 .016 schematic (bottom view) single side stable (deenergized position) 1110 91213141516 87 5 4 21 + cad data slim type pc board type 2 form c external dimensions (dowel heigh: 0.4 .016) 4.1 .161 7.62 .300 11.2 .441 0.2 0.4 .008 .016 27.8 1.094 5.087.62 5.08 .200.300 .200 2.54 .100 25.4 1.000 5.08 5.08 5.08 .200 .200 .200 11 12 13 14 765 43 2 0.8 .031 schematic (bottom view) single side stable (deenergized position) pc board pattern (bottom view) single side stable 11 12 13 14 7542 + 12 13 14 11 7542 .110 dia. 2.8 dia. 8-.047 dia. hole 8-1.2 dia. hole 2.54 3 .100 3 2.54 .100 2.54 .100 cad data slim type pc board type 4 form c external dimensions (dowel heigh: 0.4 .016) 4.1 .161 7.62 .300 11.2 .441 0.2 0.4 .008 .016 27.8 1.094 38.1 1.500 5.08 .200 5.08 .200 5.08 .200 5.08 .200 5.08 .200 5.08 .200 5.08 .200 5.08 5.085.08 5.08 5.08 .200 .200.200 .200 .200 87654321 2.54 2.54 .100 .100 0.8 .031 schematic (bottom view) single side stable (deenergized position) pc board pattern (bottom view) single side stable 1110 91213141516 87 5 4 21 + .110 dia. 14-.047 dia. hole 2.8 dia. 14-1.2 dia. hole 2.54 3 .100 3 2.54 .100 2.54 .100 91011121 3141516 754 21 8 cad data
panasonic corporation automation controls business unit industrial.panasonic.com/ac/e/ nc asctb12e 201209-t flat type 2 form c external dimensions 0.8 .031 0.4 .016 .200 .200 .200 5.08 5.08 5.08 1.000 25.4 1.000 25.4 .429 10.9 .138 3.5 1.100 27.94 .200 5.08 .100 2.54 .100 2.54 .200 5.08 schematic (top view) pc board pattern (bottom view) 14 13 12 11 2457 -+ single side stable: deenergized position .110 dia. 2.8 dia. 10-.047 dia. hole 10-1.2 dia. hole 11 12 13 14 2.54 11 .100 11 2.54 .100 2.54 0.5 .100 .020 754 2 cad data flat type 4 form c external dimensions .200 5.08 .200 5.08 .200 5.08 0.4 .016 1.000 25.4 .429 10.9 .138 3.5 1.100 27.94 .200 5.08 .200 5.08 .200 5.08 .200 5.08 1.500 38.1 0.8 .031 .200 5.08 .200 5.08 .200 5.08 .200 5.08 .200 5.08 .100 2.54 .100 2.54 schematic (top view) pc board pattern (bottom view) 141516 13 12 11 10 9 12 45 78 -+ single side stable: deenergized position 87 54 21 910111213141516 16-.047 dia. hole 16-1.2 dia. hole .110 dia. 2.8 dia. 2.54 11 .100 11 2.54 .100 2.54 0.5 .100 .020 cad data slim type plug-in type 2 form c external dimensions 0.8 .031 6.1 .240 27.8 1.094 2.5 .098 7.62 .300 11.2 .441 .200 5.08 .200 5.08 .200 5.08 .100 2.54 .100 2.54 1.000 25.4 .200 5.08 .200 5.08 .200 5.08 0.4 .016 schematic (bottom view) 11 12 13 14 7542 +- single side stable: deenergized position cad data
panasonic corporation automation controls business unit industrial.panasonic.com/ac/e/ nc asctb12e 201209-t slim type plug-in type 4 form c external dimensions 1.500 38.1 2.5 5.08 .200 5.08 .200 5.08 .200 5.08 .200 5.08 .200 2.54 .100 2.54 .100 27.8 1.094 6.1 .240 7.62 11.2 .300 .441 0.4 .016 38.1 38.9 1.500 1.531 0.8 .098 .031 5.08 .200 5.08 .200 5.08 .200 5.08 .200 5.08 .200 5.08 .200 5.08 .200 schematic (bottom view) 14 15 16 131211109 124578 -+ single side stable: deenergized position cad data slim type pc board type 2 form c external dimensions 0.8 .031 4.1 .161 27.8 1.094 0.4 .016 0.2 .008 1.000 25.4 .200 5.08 .200 5.08 .200 5.08 .200 5.08 .200 5.08 .200 5.08 .100 2.54 .100 2.54 7.62 .300 11.2 .441 schematic (bottom view) pc board pattern (bottom view) 11 12 13 14 7542 +- single side stable: deenergized position 12 13 14 11 7542 .110 dia. 2.8 dia. 10-.047 dia. hole 10-1.2 dia. hole 2.54 3 .100 3 2.54 .100 0.52.54 .020.100 cad data slim type pc board type 4 form c external dimensions 5.08 .200 5.08 .200 5.08 .200 5.08 .200 5.08 .200 27.8 1.094 4.1 .161 7.62 11.2 .300 .441 0.4 .016 0.2 .008 0.8 .031 38.1 38.9 1.500 1.531 1.500 38.1 5.08 .200 5.08 .200 5.08 .200 5.08 .200 5.08 .200 5.08 .200 5.08 .200 2.54 .100 2.54 .100 schematic (bottom view) pc board pattern (bottom view) 14 15 16 131211109 124578 -+ single side stable: deenergized position .110 dia. 16-.047 dia. hole 2.8 dia. 16-1.2 dia. hole 2.54 3 2.54 .100 3 .100 2.54 0.5 .100 .020 91011121 3141516 754 21 8 cad data
panasonic corporation automation controls business unit industrial.panasonic.com/ac/e/ nc asctb12e 201209-t safety standards notes for cautions for use. product name ul/c-ul (recognized) csa (certi?d) file no. contact rating file no. contact rating nc 2 form c e43028 5a 250v ac 1 / 10 hp 125, 250v ac 5a 30v dc lr26550 etc. 5a 250v ac 1 / 10 hp 125, 250v ac 5a 30v dc 4 form c e43028 5a 125v ac 4a 250v ac 1 / 10 hp 125, 250v ac 5a 30v dc lr26550 etc. 5a 125v ac 4a 250v ac 1 / 10 hp 125, 250v ac 5a 30v dc nc amber 2 form c e43028 3a 250v ac 1 / 20 hp 125, 250v ac 5a 30v dc lr26550 etc. 3a 250v ac 1 / 20 hp 125, 250v ac 5a 30v dc 4 form c e43028 2a 250v ac 1 / 20 hp 125, 250v ac 5a 30v dc lr26550 etc. 2a 250v ac 1 / 20 hp 125, 250v ac 5a 30v dc 1. because the nc relay is polarized, the positive ? and negative connections to the coil should be done as indicated on the wiring diagram. if connected incorrectly, it may malfunction or fail to operate. 2. while nc relays can be used with any transmission-wave current to their operation, due to slight weakening of the force of magnetic attraction, decreased resistance to vibration and shock should be taken into account. 3. the current that energizes the coil in an nc relay is ac type. because the ac sine waveform is distorted, when testing, it is essential to use a measuring device that can properly characterize the distorted waveform. the operating power of the coil in the 100 v ac 4 form c type is relatively higher than other nc types of ac relay and consequently, the total current applied through all the contacts should be kept below 10 a. 4. the ac type nc relay has a special magnetic design. as a result, once the a- side contacts have switched, the b-side contacts may once again go into a temporary on state depending on the coil inrush phase. to ensure that this phenomenon does not occur, it is necessary to carry out suf?ient practical testing with relays installed in actual devices. 5. when designing top and bottom view schematic diagrams, note that: 1) ?op view wiring diagram is indicated for the ?t series because terminals can be seen from above. 2) ?ottom view schematic diagram is indicated for the vertical series because terminals cannot be seen from above. 6. cautions for close proximity mounting when using slim series in close proximity, mount all relays facing the same direction. different mounting directions may cause change in the relay characteristics because nc relays are polarized. (same direction) top view vertical series flat series bottom view
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