house resettable Mccb Molded Case Circuit Breaker

House Resettable Mccb Molded Case Circuit Breaker

Introduction

DW17 series universal circuit breaker is suitable for distribution network with AC 50Hz voltage to 660V and current to 3900A.
To distribute electrical energy and protect the circuit and power equipment from overload, undervoltage, short circuit, etc., circuit breakers under 1250A are in AC

Feature

◎The circuit breaker is a three-dimensional layout, and the contact system, fast electromagnet, and the left and right side panels are all installed on an insulating board.
O The upper left is equipped with a shunt release, and the back is equipped with an undervoltage release connected to the trip half shaft.
O three-dimensional layout, contact system and operating mechanism are installed on the iron frame.
O. There is an arc extinguishing system on the upper part and an operating mechanism on the right.
. The circuit breaker body and the drawer seat are composed of: the drawer seat is composed of left and right side plates, aluminum brackets, isolation contact seats, secondary circuit static contacts, and sliding frames.
◎The circuit breaker body is equipped with isolation contacts, secondary circuit moving contacts, grounding contact support rails, etc.

Normal working conditions and installation conditions

◎Ambient air temperature is -59C ~ +40°C, the average value of 24h does not exceed +35C.
◎Installation location: The altitude does not exceed 2000m.
◎ Atmospheric conditions: the relative humidity of the atmosphere does not exceed 50% when the ambient air temperature is +40°C; at lower temperatures, it can have higher
Relative humidity; the average maximum relative humidity of the wettest month is 90%. Meanwhile, the average monthly maximum temperature of the month is +25°C, and
Considering the condensation on the surface of the product due to temperature changes.
◎Pollution level: three levels.
◎Installation conditions: The circuit breaker should be installed in a complete set according to the instructions or installed separately indoors, and the inclination from the vertical plane should not exceed 5.