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J7MN

Motor Protection Circuit Breaker (MPCB)

J7MN

MPCB system (motor protection CLASS 10)

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last update: February 3, 2014

Components for Fuseless Load Feeders, DIN-Rail Mounting

Type of coordination „1“ 3 x 415 V 10 kA (other conditions on request)

Motor 3~400V
kW		 Setting range
A		 Circuit-breaker
Type		 Contactor
220-230V 50Hz
Type		 Link module
Type		 DIN-rail adapter
Type
- 0.11 - 0.16 J7MN-25-E16 J7KN-10-10 230 J74MN-VD-12 J74MN-HU
- 0.14 - 0.2 J7MN-25-E2 J7KN-10-10 230 J74MN-VD-12 J74MN-HU
0.06 0.18 - 0.25 J7MN-25-E25 J7KN-10-10 230 J74MN-VD-12 J74MN-HU
0.09 0.22 - 0.32 J7MN-25-E32 J7KN-10-10 230 J74MN-VD-12 J74MN-HU
- 0.28 - 0.4 J7MN-25-E4 J7KN-10-10 230 J74MN-VD-12 J74MN-HU
0.12 0.35 - 0.5 J7MN-25-E5 J7KN-10-10 230 J74MN-VD-12 J74MN-HU
0.18 0.45 - 0.63 J7MN-25-E63 J7KN-10-10 230 J74MN-VD-12 J74MN-HU
- 0.55 - 0.8 J7MN-25-E8 J7KN-10-10 230 J74MN-VD-12 J74MN-HU
0.25 0.7 - 1 J7MN-25-1 J7KN-10-10 230 J74MN-VD-12 J74MN-HU
0.37 0.9 - 1.25 J7MN-25-1E25 J7KN-10-10 230 J74MN-VD-12 J74MN-HU
0.55 1.1 - 1.6 J7MN-25-1E6 J7KN-10-10 230 J74MN-VD-12 J74MN-HU
0.75 1.4 - 2 J7MN-25-2 J7KN-10-10 230 J74MN-VD-12 J74MN-HU
- 1.8 - 2.5 J7MN-25-2E5 J7KN-10-10 230 J74MN-VD-12 J74MN-HU
1.1 2.2 - 3.2 J7MN-25-3E2 J7KN-10-10 230 J74MN-VD-12 J74MN-HU
1.5 2.8 - 4 J7MN-25-4 J7KN-10-10 230 J74MN-VD-12 J74MN-HU
- 3.5 - 5 J7MN-25-5 J7KN-10-10 230 J74MN-VD-12 J74MN-HU
2.2 4.5 - 6.3 J7MN-25-6E3 J7KN-10-10 230 J74MN-VD-12 J74MN-HU
3 5.5 - 8 J7MN-25-8 J7KN-10-10 230 J74MN-VD-12 J74MN-HU
4 7 - 10 J7MN-25-10 J7KN-10-10 230 J74MN-VD-12 J74MN-HU
5.5 9 - 12.5 J7MN-25-12E5 J7KN-14-10 230 J74MN-VD-12 J74MN-HU
7.5 11 - 16 J7MN-25-16 J7KN-18-10 230 J74MN-VD-12 J74MN-HU
- 14 - 20 J7MN-25-20 J7KN-22-10 230 J74MN-VD-25 J74MN-HU
- 17 - 22 J7MN-25-22 J7KN-22-10 230 J74MN-VD-25 J74MN-HU
11 20 - 25 J7MN-25-25 J7KN-22-10 230 J74MN-VD-25 J74MN-HU

Technical Data according to IEC/EN 60947-1, 60947-2, 60947-4-1 and VDE 0660

This table shows the rated ultimate short-circuit breaking capacity Icu and the rated service short-circuit breaking capacity Ics of the J7MN circuit-breakers with different operational voltages as a function of the rated current In of the circuit-breakers.

The circuit-breakers can be fed at the top or bottom supply terminals without any reduction of the rated data.

If the short-circuit current exceeds the rated short-circuit breaking capacity of the circuit-breaker specified in the tables at the installation point, a back-up fuse is to be used.

The maximum rated current for the back-up fuse is specified in the tables. These fuses are only suitable for the short-circuit-currents as indicated on the fuses.

Circuit-
breaker
Type		 Rated
current
In
A		 up to AC 240V *1 up to AC 400V *1
up to AC 415V *2		 up to AC 440V *1
up to AC 460V *2
Icu
kA		 Ics
kA		 max.
fuse
(gL/gG)
A		 Icu
kA		 Ics
kA		 max.
fuse
(gL/gG)
A		 Icu
kA		 Ics
kA		 max.
fuse
(gL/gG)
A
J7MN-12 0.16 to 0.8 100 100 -- 100 100 -- 100 100 --
1 100 100 -- 100 100 -- 100 100 --
1.25 100 100 -- 100 100 -- 100 100 --
1.6 100 100 -- 100 100 -- 100 100 --
2 100 100 -- 100 100 -- 100 100 --
2.5 100 100 -- 100 100 -- 100 100 --
3.2 100 100 -- 100 100 -- 10 10 40
4 100 100 -- 100 100 -- 10 10 40
5 100 100 -- 100 100 -- 10 10 50
6.3 100 100 -- 100 100 -- 10 10 50
8 100 100 -- 50 12.5 80 *3 10 10 63
10 100 100 -- 50 12.5 80 *3 10 10 63
12 100 100 -- 50 12.5 80 *3 10 10 80
J7MN-25 0.16 to 1.25 100 100 -- 100 100 -- 100 100 --
1.6 100 100 -- 100 100 -- 100 100 --
2 100 100 -- 100 100 -- 100 100 --
2.5 100 100 -- 100 100 -- 100 100 --
3.2 100 100 -- 100 100 -- 100 100 --
4 100 100 -- 100 100 -- 100 100 --
5 100 100 -- 100 100 -- 100 100 --
6.3 100 100 -- 100 100 -- 100 100 --
8 100 100 -- 100 100 -- 50 25 63 *3
10 100 100 -- 100 100 -- 50 25 80 *3
12.5 100 100 -- 100 100 -- 50 25 80 *3
16 100 100 -- 50 25 100 *3 20 10 80
20 100 100 -- 50 25 125 *3 20 10 80
22 100 100 -- 50 25 125 *3 20 10 100
25 100 100 -- 50 25 125 *3 20 10 100
J7MN-50 25 100 100 -- 50 25 125 *3 30 15 100
32 100 100 -- 50 25 125 *3 30 15 125
40 100 100 -- 50 25 160 *3 30 15 125
45 100 100 -- 50 25 160 *3 30 15 125
50 100 100 -- 50 25 160 *3 30 15 125
J7MN-100 63 100 100 -- 50 25 160 *3 40 20 160
75 100 100 -- 50 25 160 *3 40 20 160
90 100 100 -- 50 25 160 *3 40 20 160
100 100 100 -- 50 25 160 *3 40 20 160

Circuit-
breaker
Type		 Rated
current
In
A		 up to AC 500V *1
up to AC 525V *2		 up to AC 690V *1
Icu
kA		 Ics
kA		 max.
fuse
(gL/gG)
A		 Icu
kA		 Ics
kA		 max.
fuse
(gL/gG)
A
J7MN-12 0.16 to 0.8 100 100 -- 100 100 --
1 100 100 -- 100 100 --
1.25 100 100 -- 2 2 20
1.6 100 100 -- 2 2 20
2 10 10 35 2 2 35
2.5 10 10 35 2 2 35
3.2 3 3 40 2 2 40
4 3 3 40 2 2 40
5 3 3 50 2 2 50
6.3 3 3 50 2 2 50
8 3 3 63 2 2 63
10 3 3 63 2 2 63
12 3 3 80 2 2 80
J7MN-25 0.16 to 1.25 100 100 -- 100 100 --
1.6 100 100 -- 100 100 --
2 100 100 -- 8 8 25
2.5 100 100 -- 8 8 25
3.2 100 100 -- 8 8 32
4 100 100 -- 6 3 32
5 100 100 -- 6 3 32
6.3 100 100 -- 6 3 50
8 42 21 63 6 3 50
10 42 21 63 6 3 50
12.5 42 21 80 6 3 63
16 10 5 80 4 2 63
20 10 5 80 4 2 63
22 10 5 80 4 2 63
25 10 5 80 4 2 63
J7MN-50 25 12 6 80 5 3 63
32 10 5 100 4 2 63
40 10 5 100 4 2 63
45 10 5 100 4 2 63
50 10 5 100 4 2 80
J7MN-100 63 12 6 125 6 3 80
75 8 4 125 5 3 100
90 8 4 125 5 3 125
100 8 4 125 5 3 125

*1. 10% overvoltage
*2. 5% overvoltage
*3. Back-up fuse required if short-circuit current at installation point ＞ 50 kA
-- No back-up fuse required.

Main Circuit

Type J7MN-12 J7MN-25 J7MN-50 J7MN-100
Number of poles 3 3 3 3
Max. rated current Inmax (=max. rated operational
current Ie)		 A 12 25 50 100
Permissible ambient
temperature		 Storage/transport °C -50 to +80
Operation °C -20 to +70 *1
Permissible rated
current at
temperature inside
cubicle of:		 +60 °C % 100
+70 °C % 87
Circuit-breaker
inside enclosure
Permissible rated
current at
temperature inside
enclosure of:		 +60 °C % 100
+70 °C % 87
Rated operational voltage Ue V 690 *2
Rated frequency Hz 50/60
Rated insulation voltage Ui V 690
Rated impulse withstand voltage Uimp kV 6
Utilization category IEC 60 947-2 (circuit-breaker) A
IEC 60 947-4-1 (motor starter) AC-3
Class acc. to IEC 60 947-4-1 10
DC short-circuit
breaking capacity
(time constant
t = 5 ms)		 1 conducting path DC 150 V kA 10
2 conducting paths in series
DC 300 V		 kA 10
3 conducting paths in series
DC 450 V		 kA 10
Power loss Pv per
circuit-breaker
dependent on rated
current In
(upper setting range)

R per conducting path
= P/(I2 × 3)		 In -> to 1.25 A
In -> 1.6 to 6.3 A
In -> 8 to 12 A		 W
W
W		 5
6
7		 -
-
-		 -
-
-		 -
-
-
In -> 1 to 6.3 A
In -> 8 to 16 A
In -> 20 to 25 A		 W
W
W		 -
-
-		 6
7
8		 -
-
-		 -
-
-
In -> to 25 A
In -> 32 A
In -> 40 to 50 A		 W
W
W		 -
-
-		 -
-
-		 12
15
20		 -
-
-
In -> to 63 A
In -> 75 to 90 A
In -> to 100 A		 W
W
W		 -
-
-		 -
-
-		 -
-
-		 20
30
38
Shock resistance acc. to IEC 68 Part 2-27 g 25 25 25 25
Degree of protection acc. to IEC 60 529 IP 20 IP 20 IP 20 *3 IP 20 *3
Shock hazard
protection		 acc. to DIN VDE 0106 Part 100 safe against finger touch
Temperature
compensation		 acc. to IEC 60 947-4-1 °C -20 to +60
Phase failure
sensitivity		 acc. to IEC 60 947-4-1 yes
Explosion protection acc. to EC Directive 94191 EC yes *4
Isolator
characteristics		 acc. to IEC 60 947-3 yes
Main and EM. STOP
switch characteristics		 acc. to IEC 60 204-1 (VDE 0113) yes *5
Safe isolation between
main and auxiliary
circuits		 acc. to DIN VDE
0106 Part 101		 up to
400 V +10 %		 yes
up to
415 V +5 %		 yes
Mechanical endurance operating cycles 100 000 100 000 50 000 50 000
Electrical endurance 100 000 100 000 25 000 25 000
Max. operating frequency per hour (motor starts) 1/h 15 15 15 15
Permissible mounting position any. acc. to IEC 60 447 start command "I" right-
hand side or top

*1. Over +60°C current reduction
*2. 500 V with moulded-plastic enclosure
*3. Terminal compartment IP00
*4. KEMA-test certification on request
*5. With appropriate accessories

Conductor cross-sections for main Circuit

Type J7MN-12 J7MN-25 J7MN-50 J7MN-100
Terminal type Screw-type Screw-type Box terminal Box terminal
Terminal screw Pozidriv size 2 Pozidriv size 2 Pozidriv size 2 Allen screw 4 mm
Tightening torque Nm 0.8 to 1.2 2 to 2.5 3 to 4.5 4 to 6
Conductor
cross-
sections		 solid mm2 2 x (0.5 to 1.5) 2 x (1 to 2.5) 2 x (0.75 to 16) 2 x (2.5 to 16)
mm2 2 x (0.75 to 2.5) 2 x (2.5 to 6) - -
mm2 1 x (0.5 to 4)
finely stranded with
end ferrule		 mm2 2 x (0.5 to 1.5) 2 x (1 to 2.5) 2 x (0.75 to 16) 2 x (2.5 to 35)
mm2 2 x (0.75 to 2.5) 2 x (2.5 to 6) 1 x (0.75 to 25) 1 x (2.5 to 50)
mm2 1 x (1 to 10)
stranded mm2 2 x (0.5 to 1.5) 2 x (1 to 2.5) 2 x (0.75 to 25) 2 x (10 to 50)
mm2 2 x (0.75 to 2.5) 2 x (2.5 to 6) 1 x (0.75 to 35) 1 x (10 to 70)
mm2 1 x (0.5 to 4) 1 x (1 to 10)
AWG-wires, solid or
stranded		 AWG 2 x (18 to 14) 2 x (14 to 10) 2 x (18 to 3) 2 x (10 to 1/0)
AWG - - 1 x (18 to 2) 1 x (10 to 2/0)
conductor bar (number
x width x thick)		 mm - - 2 x (6 x 9 x 0.8) 2 x (6 x 9 x 0.8)
mm - - - 18 x 10
mm2 - - - up to 2 x 70

Auxiliary switches

Switching capacity Control voltage
Front transverse
auxiliary switch
with 1 NO + 1 NC		 Rated operational
voltage Ue		 AC V 24 230
Rated operational
current Ie/AC-15		 A 2 0.5
Rated operational
current Ie/AC-12 Ith		 A 2.5 2.5
Rated operational
voltage Ue		 DC L/R
200 ms		 V 24 48 60
Rated operational
current Ie/DC-13		 A 1 0.3 0.15
Lateral auxiliary
switch and
signalling switch		 Rated operational
voltage Ue		 AC V 24 230 400 690
Rated operational
current Ie/AC-15		 A 6 6 3 1
Rated operational
current Ie/AC-12 Ith		 A 10 10 10 10
Rated operational
voltage Ue		 DC L/R
200 ms		 V 24 110 220 440
Rated operational
current Ie/DC-13		 A 2 0.5 0.25 0.1
Undervoltage
release		 Power consumption during pick-up VA/W 20.2/13
uninter-rupted
duty		 VA/W 7.2/2.4
Response voltage trip V 0.7 to 0.35 × Us
pick-up V 0.85 to 1.1 × Us
Max. opening time ms 20
Shunt release Power consumption during pick-up AC VA/W 20.2/13
DC W 13 to 80
Response voltage acc. to IEC 60 947-1,
trip		 V 0.7 to 1.1 × Us
Max. opening time ms 20
Short-circuit
protection for
auxiliary and
control circuits		 Fuse gL/gG A 10
Miniature circuit breaker C-
characteristic		 A 6 *1
Conductor
cross-sections
for auxiliary and
control circuits		 Screw-type Pozidriv size 2
solid mm2 2 x (0.5 to 1.5)/2 x (0.75 to 2.5)
finely stranded with ferrule mm2 2 x (0.5 to 1.5)/2 x (0.75 to 2.5)
stranded mm2 2 x (0.5 to 1.5)/2 x (0.75 to 2.5)
AWG-wires, solid or stranded AWG 2 x (18 to 14)

*1. Prospective short-circuit current ＜ 0.4 kA.

last update: February 3, 2014

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