Circuit breaker

ZUM1L-800/3N Residual current operated circuit breaker

Rated frequency: 50Hz
Rated residual operating current: 50/75/100/150/200/300/500/800/1000mA,
rated residual non-operating current 0.5I△n: Abrupt leakage action value: ≤50mA Single product only uses four For each gear, please refer to the value on the nameplate.
Rated breaking time: <0.2s/<0.5s can be set to automatically reclose once from 20s to 60s

Detailed introduction

Main purpose and scope of application
ZUM1L series residual current operated circuit breaker (referred to as leakage circuit breaker) is a multifunctional integrated leakage circuit breaker integrating leakage relay and molded case circuit breaker. Suitable for low-voltage power grids with three-phase four-wire neutral point directly grounded (TT grounding system), used to provide indirect contact protection against personal electric shock hazards, and also for ground faults, overcurrents, short circuits, and overvoltages of lines or electrical equipment , Undervoltage, lack of phase, and neutral line break on the power supply side for protection.
This product complies with: National Standard GB14048.2.

Model and meaning

Main technical parameters

1. Rated voltage:	400V three-phase four-wire
2. Rated insulation voltage:	800V
3. Rated current:	100A shell frame 40A, 63A, 80A, 100A optional
	250A shell frame 100A, 160A, 200A, 250A optional
	400A shell frame 250A, 315A, 350A, 400A optional
	800A shell frame 500A, 630A, 700A, 800A optional
4. Rated frequency:	50Hz
5. Rated residual operating current:	50/75/100/150/200/300/500/800/1000mA,
6. Rated residual non-operation current 0.5I△n: Abrupt leakage action value: ≤50mA	Only four gears are selected for a single product, please refer to the value on the nameplate.
7. Rated breaking time:	<0.2s/<0.5s can be set to automatically overlap once 20s~60s
8. Delayed reclosing time:	70% rated voltage
9. Undervoltage action value:	120% rated voltage (can be closed)
10. Overvoltage action value:	Action when any phase of ABC three-phase is missing (can be closed);
11. Phase loss protection:	The functional module power supply is directly taken from the three-phase power supply of the autonomous loop, which completely avoids the problem of phase loss and residual current protection not working.
12. Rated ultimate short-circuit breaking capacity and rated residual short-circuit making (breaking) capacity:	See table 1
13. Protection characteristics of overcurrent release:	See table 2
14. Classification of action characteristics:	AC type
15. Product use category:	Class A (delay/instant two-stage protection)
16. Reference temperature:	40℃
17. The product conforms to:	GB14048.2 National Standard

Table 1 Rated short-circuit breaking capacity and rated residual making and breaking capacity

Frame rating rated current A	Rated ultimate short-circuit breaking capacity lcu (effective value kA)	Rated short-circuit breaking capacity lcu (effective value kA)	Rated residual making and breaking capacity l△m (effective value kA)
100	35	twenty two	8.75
250	50	35	12.5
400	50	35	12.5
630	65	42	16.25
800	65	42	16.25

Table 2 Protection characteristics of overcurrent release

Ambient air temperature -5℃~+40℃	Test current	Trip time	status
	1.05In	No tripping within 2h	Cold start
	1.30In	Trip within 2h	Hot start
Any suitable time	10Imax	<0.2s	Cold start

Note: ln overcurrent setting value Imax: frame grade current

Shape and installation dimensions

specification	Dimensions (mm)					Installation size (mm)		Mounting hole diameter (mm)
specification	A	B	E	F	G	C	D
100A	231	121	45	62	170	60	211	4
250A	240	140	45	84	177	70	202	4
400A	336	197	82	99	246	96	272	6
630A	355	228	76	106	261	116	285	6
800A	355	228	76	106	261	116	285	6

Technical Parameters

Ordering instructions When placing an
order, please specify the
product model, rated current, rated residual current operating value, function code, and order quantity.
If you need to order ZUM1L, the rated current is 250A, whether the current gear is adjustable, the residual current action value is 75/150/300/500mA, 100 units.

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