ERB2-125 High Breaking Miniature Circuit Breaker

ERB2-125 series high breaking miniature circuit breakers are suitable for AC 50/60HZ, rated voltage 400V and single-phase 230V, rated current 100A and below lines. They are used to protect buildings and electrical equipment from short circuits and overloads. Under normal circumstances, they can also be used as infrequent line conversions. They are also suitable for isolating switches and as line undervoltage protection and remote disconnection.

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Product Introduction

Products Description

Scope of application

ERB2-125 series high-breaking miniature circuit breakers are suitable for AC 50/60HZ, rated voltage 400V and single-phase 230V, rated current 100A and below, used for short-circuit and overload protection of buildings and electrical equipment. Under normal circumstances, they can also be used as infrequent line conversions. They are also suitable for disconnectors and line undervoltage protection and remote disconnection.
The product has beautiful appearance, small size, light weight, accurate current tripping setting, reliable action, high breaking capacity, rapid tripping, rail installation, and combined mode design. It can be combined with auxiliary contacts, alarm indication contacts, undervoltage releases, shunt releases and other accessories to meet the needs of different users. The housing and components are made of highly flame-retardant and impact-resistant plastics with a long service life.
This product complies with standards: IEC60947-2, GB/T14048.2.

Model and meaning

product-886-326
Technical parameters

Main types
The rated current of the circuit breaker is 63A, 80A, 100A, 125A
The number of poles of the circuit breaker is divided into: single pole, two poles, three poles and four poles
This circuit breaker is installed on a 35X7.5 standard mounting rail

The main circuit rating of the circuit breaker is shown in Table 1

Rated current (A)

Number of poles

Rated voltage(V)

Rated short-circuit breaking capacity

Test circuit expected current (A)

Power factor

63,80,100,125

1,2,3,4

230/240

400

0.45～0.50

See Table 2 for over-current tripping characteristics

Ambient air temperature	I/In	Test time expected results		Starting State
		In≤63A	In＞63A
30±2℃	1.05	No tripping within 1 hour	No tripping within 2 hours	cold
	1.30	Tripping within 1 hour	Tripping within 2 hours	hot
	3.0	Returnable time>3s	Returnable time>5s	hot
-5～45℃	5.0～10.0(C)	Action within ≤0.1s		cold
	10.0～14.0(D)	Action within ≤0.1s

Power frequency withstand voltage: After the moisture and heat resistance performance, the circuit breaker should withstand a 2500V power frequency withstand voltage test for 1 minute without flashover and breakdown.
Mechanical and electrical life: The mechanical and electrical life of the circuit breaker is 4000 times, of which the electrical life is 1500 times.

Tripping characteristic curve

Moisture and heat resistance: Class 2 (temperature 55°C, relative humidity 95%)
Wiring: Use terminal blocks with clamps to fix cable cross-sections up to 50mm².

Appearance and installation dimensions

product-671-701