Safety Breaker MCCB 3P

The operating principle of the Safety Breaker MCCB 3P is based on the combination of a magnetic trigger and a thermal responder. When an overload or short-circuit occurs in a circuit, the current will increase dramatically, and the magnetic trigger will sense this abnormality and quickly cut off the circuit. Meanwhile, the thermal responder detects temperature changes in the circuit and also triggers the MCCB to cut off the circuit when the temperature exceeds the set value, thus effectively preventing equipment damage and fire accidents.

Model:STN2-100

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Product Description

Specifications	STN2-100				STN2-160				STN2-250				STN2-400				STN2-630
Frame Current (A)	100				160				250				400				630
Number of Poles	3		4		3		4		3		4		3		4		3		4
Ultimate Breaking Capacity (Icu, kA)	F	N		H	F	N		H	F	N		H	F	N		H	F	N		H
AC220/240V (kA)	85	90		100	85	90		100	85	90		100	40	85		100	40	85		100
AC380/415V (kA)	36	50		70	36	50		70	36	50		70	36	50		70	36	50		70
Rated Insulation Voltage	AC800V
Rated Working Voltage	AC690V
Rated Current, Thermal Tripping, TMD, A	63, 80, 100				80, 100, 125, 160				125, 160, 200, 250				-				-
Rated Current, Electronic Tripping, MIC, A	40, 100				40, 100, 160				100, 160, 250				250, 400				250, 400, 630
Auxiliary, Alert, Fault Accessories	OF/SD/SDE/SDx
Shunt & Under Voltage Coil	MX/MN
Mechanical Life	50000				40000				20000				15000				15000
Electric life	30000				20000				10000				6000				4000

Safety Breaker MCCB 3P/4P reflects the latest current limiting principle and manufacturing technology, characterized by compact structures, full modularization, high breaking, and zero flashover. Circuit breaker is equipped with overload, short-circuit and undervoltage protection device, so as to protect the circuit and power supply equipment from damage.

Product Features

Bipolar design: MCCB 3P/4P is of bipolar design, which means it can control both zero and fire wires at the same time, ensuring the safety and stability of the circuit.

High precision: with high precision current detection function, it can accurately determine the fault situation in the circuit and cut off the circuit in time.

High reliability: Made with advanced technology and materials, it has high reliability and stability, and can work normally in various harsh environments.

Easy to install and maintain: reasonable design, easy to install, and at the same time easy to maintain and replace, reducing the user's operation and maintenance costs.