I-8
Motor Protection Circuit Breaker
J7MN
Auxiliary switches
Time/Current characteristic
J7MN-3P & J7MN-3R
J7MN-6R & J7MN-9R
Aux. Type
Switching capacity
Control voltage
J77MN-11F / 20F / 02F & J7MN-T(A)
Front transverse auxiliary switch with 1
NO + 1 NC, 2 NO, 2 NC
Rated operational voltage
Ue
24 VAC
240 VAC
Rated operational current
Ie/AC-15
3 A
2 A
Ie/AC-12 Ith
5 A
5 A
Rated operational voltage
Ue L/R 200 ms
24 VDC
220 VDC
Rated operational current
Ie/DC-13
1 A
0.1 A
J77MN-11S / 20S / 02S
Lateral auxiliary switch with 1 NO + 1
NC, 2 NO, 2 NC & two signalling
switches with 1 NO + 1 NC
Rated operational voltage
Ue
24 VAC
240 VAC
Rated operational current
Ie/AC-15
6 A
4 A
Ie/AC-12 Ith
10 A
Rated operational voltage
Ue L/R 200 ms
24 VDC
220 VDC
Rated operational current
Ie/DC-13
2 A
0.25 A
J77MN-U
Undervoltage release
Power consumption
during pick-up
8.5 VA / 6 W
uninterrupted duty
3 VA / 1.2 W
Response voltage
trip
0.7 to 0.35 × Us (V)
pick-up
0.85 to 1.1 × Us (V)
J77MN-S
Shunt release
Power consumption
during pick-up
8.5 VA / 6 W
uninterrupted duty
3 VA / 1.2 W
Response voltage
trip
0.7 to 1.1 × Us (V)
Short-circuit protection for auxiliary and control circuits Fuse gL/gG
10 A
Miniature circuit breaker C-characteristic
6 A
Conductor cross-sections for auxiliary and control circuits
Screw-type Pz2
solid
1 x (0.5 to 2.5) / 2x (0.5 to 2.5) mm²
flexible
1 x (0.5 to 4) / 2 x (0.75 to 2.5) mm²
solid AWG
1 x (20 to 14) / 2 x (20 to 14) AWG
flexible AWG
1 x (20 to 10) / 2 x (18 to 14) AWG
Oper
ation time
Oper
ation time
Multiple of set current × Ie
Multiple of set current × Ie
Hour
Min
ute
Second
Time
Hour
Min
ute
Second
Time
Ir=10.4, ..., 15.6 X In
Reflex tripping:
t
≤
5 ms
Ir=10.4, ..., 15.6 X In
Reflex tripping:
t
≤
5 ms
I
The curve shows the mean operating current at an ambient temperature of 20°C starting from cold.
II
The tripping characteristic of electromagnetic overcurrent releases (short-circuit releases)
The tripping characteristic of the inverse-time delayed overload releases apply for DC and AC with a frequency of 0 to 400 Hz.
At operating temperature, the tripping times of the thermal releases are reduced to approximately 25 %.
The characteristic shown here is a schematic representation of circuit-breakers for all ranges.
Current limiting characteristics and I²t characteristics are available on request.
