Technical parameters of M-L7 series high breaking miniature circuit breaker
Electrical parameters
a. Compliant with electrical standards: EN0898 (IEC898)
GB10963
b. Rated voltage (Ue): 230/400V; 50/60Hz
c. Rated breaking capacity Icu: 10kA IEC898 (1-63A)
d. DC short-circuit breaking capacity: maximum 48V (M-L7..., 10kA) single pole
Maximum 250V (M-L7-DC, 6kA) unipolar
e. Release characteristics: B, C, D characteristic curves
f. Maximum side fuse: 100A gL (>10kA)
g. Selective level: 3
h. Working environment temperature: -5 to+40oC
i. Shell protection level: IP40 (after installation)
j. Lifespan: Electrical, no less than 8000 on-off actions
Mechanical, with no less than 20000 on-off actions
mechanical parameters
a. Exposed surface length: 45mm
b. Shell height: 80mm
c. Shell width: 17.5mm per pole (single pole)
d. Installation method: Using IEC standard guide rail 35mm
e. Terminal form: Dual purpose terminal can connect busbar and wire
F. Terminal wiring capacity: busbar 1-25mm2; Bus thickness 0.8-2mm

Overall dimensions


Unless otherwise stated, a two pole switch is two modules wide, and a four pole switch is four modules wide.

It provides protection against overload and short circuit of electrical circuits or equipment, and has power isolation function.		1 Pole	2-pole	3 poles	4-pole
Rated current In (A)		model	model	model	model
C characteristic curve Instantaneous release 5-10 in Mainly applicable to lighting or partial power circuits	one	M-L7-1/1/C	M-L7-1/2/C	M-L7-1/3/C	M-L7-1/4/C
	two	M-L7-2/1/C	M-L7-2/2/C	M-L7-2/3/C	M-L7-2/4/C
	three	M-L7-3/1/C	M-L7-3/2/C	M-L7-3/3/C	M-L7-3/4/C
	four	M-L7-4/1/C	M-L7-4/2/C	M-L7-4/3/C	M-L7-4/4/C
	six	M-L7-6/1/C	M-L7-6/2/C	M-L7-6/3/C	M-L7-6/4/C
	ten	M-L7-10/1/C	M-L7-10/2/C	M-L7-10/3/C	M-L7-10/4/C
	sixteen	M-L7-16/1/C	M-L7-16/2/C	M-L7-16/3/C	M-L7-16/4/C
	twenty	M-L7-20/1/C	M-L7-20/2/C	M-L7-20/3/C	M-L7-20/4/C
	twenty-five	M-L7-25/1/C	M-L7-25/2/C	M-L7-25/3/C	M-L7-25/4/C
	thirty-two	M-L7-32/1/C	M-L7-32/2/C	M-L7-32/3/C	M-L7-32/4/C
	forty	M-L7-40/1/C	M-L7-40/2/C	M-L7-40/3/C	M-L7-40/4/C
	fifty	M-L7-50/1/C	M-L7-50/2/C	M-L7-50/3/C	M-L7-50/4/C
	sixty-three	M-L7-63/1/C	M-L7-63/2/C	M-L7-63/3/C	M-L7-63/4/C
D characteristic curve Instantaneous release of 10~15In Mainly applicable to power circuits or other strongly inductive circuits	two	M-L7-2/1/C	M-L7-2/2/C	M-L7-2/3/C	M-L7-2/4/C
	four	M-L7-4/1/D	M-L7-4/2/D	M-L7-4/3/D	M-L7-4/4/D
	six	M-L7-6/1/D	M-L7-6/2/D	M-L7-6/3/D	M-L7-6/4/D
	ten	M-L7-10/1/D	M-L7-10/2/D	M-L7-10/3/D	M-L7-10/4/D
	sixteen	M-L7-16/1/D	M-L7-16/2/D	M-L7-16/3/D	M-L7-16/4/D
	twenty	M-L7-20/1/D	M-L7-20/2/D	M-L7-20/3/D	M-L7-20/4/D
	twenty-five	M-L7-25/1/D	M-L7-25/2/D	M-L7-25/3/D	M-L7-25/4/D
	thirty-two	M-L7-32/1/D	M-L7-32/2/D	M-L7-32/3/D	M-L7-32/4/D
	forty	M-L7-40/1/D	M-L7-40/2/D	M-L7-40/3/D	M-L7-40/4/D
	fifty	M-L7-50/1/D	M-L7-50/2/D	M-L7-50/3/D	M-L7-50/4/D
	sixty-three	M-L7-63/1/D	M-L7-63/2/D	M-L7-63/3/D	M-L7-63/4/D

Product Features
Compliant with the latest standards IEC898 and GB10963;
Accurate setting of current trip;
The breaking capacity can reach up to 10kA;
Extremely high current limiting capability, capable of achieving high selectivity;
Double terminals on both sides are suitable for busbar and single core wires;
Bus bars can be used on both sides;
Multi functional accessory series;
The wiring screws of the composite slot have high torque, secure wiring, and can achieve fast wiring;
The incoming direction of the power supply is arbitrary;
Having DC products, it can be widely used in fields such as telecommunications or electric locomotives.

Scope of application:

Suitable for overload and short circuit protection of DC lines. Especially suitable for industries such as communication, power, and locomotives.
Rated current (A) In	model		model
The rated breaking capacity is: C characteristic curve Instantaneous release 5-10In Note: The positive and negative poles of the power supply must not be connected incorrectly, otherwise the fault current cannot be effectively disconnected.	one	M-L7-1/1/C-DC	M-L7-1/2/C-DC
	two	M-L7-2/1/C-DC	M-L7-2/2/C-DC
	three	M-L7-3/1/C-DC	M-L7-3/2/C-DC
	four	M-L7-4/1/C-DC	M-L7-4/2/C-DC
	six	M-L7-6/1/C-DC	M-L7-6/2/C-DC
	ten	M-L7-10/1/C-DC	M-L7-10/2/C-DC
	thirteen	M-L7-13/1/C-DC	M-L7-13/2/C-DC
	sixteen	M-L7-16/1/C-DC	M-L7-16/2/C-DC
	twenty	M-L7-20/1/C-DC	M-L7-20/2/C-DC
	twenty-five	M-L7-25/1/C-DC	M-L7-25/2/C-DC
	thirty-two	M-L7-32/1/C-DC	M-L7-32/2/C-DC
	forty	M-L7-40/1/C-DC	M-L7-40/2/C-DC
	fifty	M-L7-50/1/C-DC	M-L7-50/2/C-DC
	Single pole rated voltage 250V T=4ms		Two pole rated voltage 500V T=4ms

load capacity
Suitable for unipolar L7 series
Allowable load under corresponding temperature and n switch operating states: IDL=InKT (T) KN (N)

energy consumption
Compliant with EN60898 standard (IEC898)

Short circuit capability of M-L7 and fuse D0 or NH
1.4 High selectivity can exceed 1.4kA: □ No selection function
Selective fuses D01, D02, D03

Selective use of fuse NH-00

M-L7 series high breaking miniature circuit breaker