Test Table

Motor Protection Circuit Breaker (MPCB)

Rated
current
In
A
Suitable
for
motors *1
3~400V
kW
Current setting rangeShort-
circuit
breaking
capacity
at 3~400V
kA
TypePack
pcs.
Weight
approx.
kg/pcs.
Thermal
overload
release
A
Instantaneous
short-circuit
release
A
Circuit-Breakers J7MN-12
3323_lu_1_10.160.11 – 0.162.1100J7MN-12-E1610.21
0.20.14 – 0.22.6100J7MN-12-E210.21
0.250.060.18 – 0.253.3100J7MN-12-E2510.21
0.320.090.22 – 0.324.2100J7MN-12-E3210.21
0.40.28 – 0.45.2100J7MN-12-E410.21
0.50.120.35 – 0.56.5100J7MN-12-E510.21
0.630.180.45 – 0.638.2100J7MN-12-E6310.21
0.80.55 – 0.810100J7MN-12-E810.21
10.250.7 – 113100J7MN-12-110.21
1.250.370.9 – 1.2516100J7MN-12-1E2510.21
1.60.551.1 – 1.621100J7MN-12-1E610.21
20.751.4 – 226100J7MN-12-210.21
2.51.8 – 2.533100J7MN-12-2E510.21
3.21.12.2 – 3.242100J7MN-12-3E210.21
41.52.8 – 452100J7MN-12-410.21
53.5 – 565100J7MN-12-510.21
6.32.24.5 – 6.382100J7MN-12-6E310.21
835.5 – 810450J7MN-12-810.21
1047 – 1013050J7MN-12-1010.21
125.59 – 1215650J7MN-12-1210.21
Circuit-Breakers J7MN-25
3323_lu_1_20.160.11 – 0.162.1100J7MN-25-E1610.32
0.20.14 – 0.22.6100J7MN-25-E210.32
0.250.060.18 – 0.253.3100J7MN-25-E2510.32
0.320.090.22 – 0.324.2100J7MN-25-E3210.32
0.40.28 – 0.45.2100J7MN-25-E410.32
0.50.120.35 – 0.56.5100J7MN-25-E510.32
0.630.180.45 – 0.638.2100J7MN-25-E6310.32
0.80.55 – 0.810100J7MN-25-E810.32
10.250.7 – 113100J7MN-25-110.32
1.250.370.9 – 1.2516100J7MN-25-1E2510.32
1.60.551.1 – 1.621100J7MN-25-1E610.32
20.751.4 – 226100J7MN-25-210.32
2.51.8 – 2.533100J7MN-25-2E510.32
3.21.12.2 – 3.242100J7MN-25-3E210.32
41.52.8 – 452100J7MN-25-410.32
53.5 – 565100J7MN-25-510.32
6.32.24.5 – 6.382100J7MN-25-6E310.32
835.5 – 8104100J7MN-25-810.32
1047 – 10130100J7MN-25-1010.32
12.55.59 – 12.5163100J7MN-25-12E510.32
167.511 – 1620850J7MN-25-1610.32
2014 – 2026050J7MN-25-2010.32
2217 – 2228650J7MN-25-2210.32
251120 – 2532550J7MN-25-2510.32
Circuit-Breakers J7MN-50
3323_lu_1_3251118 – 2532550J7MN-50-2510.96
321522 – 3241650J7MN-50-3210.96
4018.528 – 4052050J7MN-50-4010.96
4536 – 4558550J7MN-50-4510.96
502240 – 5065050J7MN-50-5010.96
Circuit-Breakers J7MN-100
3323_lu_1_4633045 – 6381950J7MN-100-6312.1
753757 – 7597550J7MN-100-7512.1
9070 – 90117050J7MN-100-9012.1
1004580 – 100 *2123550J7MN-100-10012.1

*1. Recommended values for standard motors
*2. max. motor current 95A

Accessories

DescriptionVersionfor
circuit
breaker
TypePack
pcs.
Weight
approx.
kg/pcs.
Transverse auxiliary contact block
3323_lu_2_1Contact block1NO + 1NCallJ73MN-11F100.02
Auxiliary contact block for left hand side mounting (max 1pc. per circuit breaker)
3323_lu_2_2Contact block1NO + 1NC 9 mmallJ73MN-11S100.03
Signalling switch for left hand side mounting (max 1pc. per circuit breaker)
3323_lu_2_3Signalling switch1NO + 1NC each
Individual tripped and
short-circuit signalling
J7MN-25
J7MN-50
J73MN-T-11S10.07
Auxiliary releases for right hand side mounting (max 1pc. per circuit breaker)
3323_lu_2_4Undervoltage release
Trips the circuit-breaker when the
voltage is interrupted. Prevents the
motor from being restarted
accidentally when the voltage is
restored, suitable for EMERGENCY
STOP acc. to VDE 0113
AC 50 Hz
230 V
AC 60 Hz
240 V
allJ74MN-U-N110.12
3323_lu_2_5Shunt release
Trips the circuit-breaker when the
release coil energized.
50/60 Hz
100% ON
210-240 V
50/60 Hz, DC
5 sec ON
190-330 V
J7MN-12J74MN-S-N210.11

Enclosures and Front Plates

DescriptionVersionfor circuit
breaker
TypePack
pcs.
Weight
approx.
kg/pcs.
Front Plates
3323_lu_3_1Moulded plastic front plate
with actuator diaphragm
and holder for circuit
breaker
for actuation of circuit-
breakers in any enclosure
protection degree IP55
J7MN-12J74MN-P1210.08
Moulded plastic front plate
with rotary operating
mechanism lockable
for actuation of circuit-
breakers in any enclosure
protection degree IP55
J7MN-25
J7MN-50
J74MN-P2510.08
Holder for front plate
J74MN-P25
Holder is mounted on front
plate, circuit-breaker (with
accessories) is snapped on
J7MN-25J74MN-PH10.12
Enclosures
3323_lu_3_2Moulded plastic enclose
with actuator diaphragm
knockouts for J7MN-25
sealable
protection degree IP55
with N- and PE- terminal
(+ aux. contact + release)
J7MN-12J74MN-PF1210.27
3323_lu_3_3Moulded plastic enclose
with rotary operating
mechanism knockouts for
J7MN-25 lockable
protection degree IP55
with N- and PE- terminal
(+ aux. contact + release)
J7MN-25J74MN-PF2510.30
Door-coupling mechanisms
3323_lu_3_4The door-coupling rotary operating mechanisms consist of a knob, a coupling driver and a extension
shaft (5 mm x 5 mm). The door-coupling rotary operating mechanisms are designed for degree of
protection IP 65.
The door locking device prevents accidental opening of the cubicle door in the ON position of the circuit-
breaker.
The OFF position can be locked with up to 3 padlocks.
Door-coupling rotary
mechanism black
extension shaft 330 mm
with supporting bracket
J7MN-25 to
J7MN-50
J74MN-DC-B10.3
Emergency-Stop
Door-coupling rotary
mechanism red/yellow
extension shaft 330 mm
with supporting bracket
J7MN-25 to
J7MN-50
J74MN-DC-RY1