ERM1L Plastic Case Circuit Braek

Scope of application

ERM1L series plastic shell circuit breakers with residual current protection (hereinafter referred to as earth leakage circuit breakers) are suitable for AC 50HZ (or 60HZ), whose rated insulation voltage is 800V, whose rated working voltage is 400V, and whose rated working current is up to 630A (800A) for infrequent switching and infrequent starting of motors.
Rated working voltage of 400V, rated working current up to 630A (800A) in the circuit for infrequent conversion and infrequent starting of motor. The circuit breaker has overload, short-circuit and under-voltage protection functions, which can protect the line and power supply.
Overload, short-circuit and under-voltage protection function, can protect the line and power supply equipment from damage; at the same time, can provide indirect contact protection for people, but also for overcurrent protection can not detect the long-term existence of the ground fault may be
It can also provide protection against fire hazards that may be caused by long-standing ground faults that cannot be detected by the overcurrent protection. In the event of failure of other protective devices, the ERM1L earth leakage circuit breaker with a rated residual action current of 30MA can directly provide additional protection.
According to its rated ultimate short circuit breaking capacity, the circuit breaker is divided into L type (standard type) and M type (high breaking type).
The circuit breakers are characterized by small size, high breaking capacity, short flying arc and vibration resistance. The circuit breaker can be installed vertically (i.e. vertical installation) or horizontally (i.e. horizontal installation).
The circuit breaker has the function of isolation, and its corresponding symbol is: "_/ to".
The circuit breaker complies with the standard:IEC60947-2 and GB/T14048.2 and Appendix B Circuit breakers with residual current protection.
The circuit breaker can not be inverted into the line, that is, only allows 1, 3, 5 connected to the power line, 2, 4, 6 connected to the load line, if you need to invert the line can be customized.
If you need to invert the line can be customized.

Model Meaning and Classification

Notes.
1, according to the rated ultimate short circuit breaking capacity of the high and low is divided into L-type (standard), M-type (high breaking type).
2, handle direct operation without code: electric operation with P; rotating handle with Z.
3,No code for power distribution circuit breaker: motor protection is indicated by 2.
4,According to the number of poles of the product is divided into three-pole, four-pole, four-pole products neutral pole (N pole) in the form of two kinds.
Type A: N-pole is not installed overcurrent release, and N-pole is always on, not with the other three poles together.
Type B: N-pole is not installed overcurrent tripper, and N-pole and the other three poles together (N-pole first after the split).
5,Residual current disconnectors are divided into 1-type and II-type (see table IV for details). 1-type is the standard type, and II-type should be specified when ordering.
6, without alarm unit module without code, with alarm unit module should be specified when ordering.

Normal working environment

●Altitude:<2000m
●Maximum inclination is 22.5°
●Ambient temperature:-5℃~+40C
●In a medium with no danger of explosion and where the medium is not sufficiently corrosive
●Resistant to humid air
●Metals and destroy insulation gas and conductive dust place
●Resistant to the effects of salt spray and oil mist
●Where there is no rain or snow

Main Features

Residual current three-phase protection: ERM1L circuit breaker realizes ground fault protection, conventional leakage protection module with residual current protection circuit breaker works on two-phase power sampling, this series of circuit breaker is three-phase.
The circuit breaker is three-phase, if any phase is missing, the leakage protection module of the circuit breaker can still work normally.
Field adjustable: the rated residual action current IAn and residual current action time (non-delayed and delayed) can be adjusted according to the actual situation.
Low voltage protection: when the phase voltage drops by 50V, the leakage protection module can still work normally.
Leakage alarm output function: when the residual current of the equipment or line reaches or exceeds the set value, the circuit breaker with leakage alarm module outputs a passive contact signal to drive the corresponding alarm device.
corresponding alarm device.
Installation with interchangeability: external dimensions and installation dimensions and ERM1 series circuit breakers with the same specifications (ERM1L-630 and ERM1-800 are the same), installation with better interchangeability

Structural Introduction

Main performance indicators of leakage circuit breaker

Model		ERM1L-125		ERM1L-250		ERM1L-400		ERM1L-630,800
Frame grade current Inm (A)		125		250		400		630,800
Rated current In (A)		16,20,25,32,40,50,63,80,100,125		100,125,140,160,180,200,225,250		200,225,250,315,350,400		400,500,630,800
Rated operating voltage Ue (V)		AC400V
Rated insulation voltage Ui (V)		AC1000V
Number of poles		3	4	3	4	3	4	3	4
Rated ultimate short-circuit breaking capacity level		L	M	L	M	L	M	L	M
Rated residual operating current I△n	Type Ⅰ	30,100,300mA		30,100,300mA		100,300,500mA		100,300,500mA
	Type Ⅱ	100,300,500mA		100,300,500mA		300,500,1000mA		300,500,1000mA
Rated residual non-operating current		I△n50%
Rated residual short-circuit making (breaking) capacity I△n (mA)		lcnx25%
Rated ultimate short-circuit breaking capacity lcu (kA)	AC400V	35	75	35	75	50	85	50	85
Rated operating short-circuit breaking capacity lcs (kA)	AC400V	22	50	22	50	35	65	35	65
Operational performance (times)	Power on	3000		2500		1500		1500
	No power on	7000		6500		4000		3000
	L	150		165		257		280
	W	92	122	107	142	150	198	210	280
	H	92		90		106.5		115.5
Arcing distance(mm)		≤50		≤50		≤100		≤100

Derating factor

Derating factor of leakage circuit breaker when the ambient temperature changes

Note: The above derating factors are measured under the rated current of the frame.

Decoupler Method and Accessory Designator

Note:
The first digit 2 of the release mode and internal accessory code indicates electromagnetic (instantaneous) release, and 3 indicates thermal-electromagnetic (compound) release; the last two digits indicate the internal accessory code. If there is no accessory, 00 is used.
The auxiliary contacts of 220, 320, 240, and 340 specifications in ERM1L-125 and 250 can provide two pairs of contacts (i.e. two normally open and two normally closed), but it must be indicated when ordering.
If the ERM1L series is equipped with a leakage alarm unit module, the accessories are only available in ▲ specifications; the leakage alarm unit module has the following two modes, and the user should indicate it when ordering according to the needs:
Mode 1: When leakage occurs, the leakage alarm module sends a signal and the circuit breaker trips at the same time;
Mode 2: When leakage occurs, the leakage alarm module sends a signal, but the circuit breaker does not trip. This mode is to meet the needs of special occasions. Please consider carefully when using this function to protect electrical appliances.
The wiring diagram of the leakage alarm module can be found in the product label or instruction manual. P1-P2.P3-P4 are normally open and normally closed contacts, and the contact capacity is AC230V5A. The input power supply at the P5-P6 end is AC50Hz, 230 or 400V (selectable according to user needs).

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