INTRODUCTION

DHM1B DC Circuit Breaker is used for low-voltage power generation, transmission and distribution lines of rated voltage of DC 12~500V, , rated current of 60A-600A to provide isolation, overload and short circuit protection, DC MCCB can also be used for infrequent making and breaking of circuits under normal circumstances.
The  DC Circuit Breaker are widely used in photovoltaic power generation systems, wind power generation systems, roof building power generation systems, rail transit power distribution systems and infrastructure construction and other low-voltage DC generation.
DHM1B DC circuit breaker can be mounted vertically (upright) or horizontally (transverse).
DHM1B DC circuit breaker meets the standard: IEC60947-2 "low-voltage switchgear and control equipment, Part 2: circuit breakers.”

Voltage	DC
Poles	1P	2P
Breaking Capacity	25kA
Withstand Voltage	DC 12~500V	DC 12~500V
Wiring Diagram

Remarks: ①The circuit breaker has no polarity, and the positive and negative poles can be switched.
②Cable wiring can be entered at the bottom and exit at the top, and can be entered at the top and exit at the bottom

ELECTRICAL TECHNICAL PARAMETERS

NORMAL OPERATING CONDITIONS

● Ambient air temperature: -5~+40°C, and average temperature in 24h is below +35°C.
● Altitude: The altitude of the installation site is not more than 2000m.
● Atmospheric conditions: The air relative humidity in the highest temperature +40°C is not more than 50%; In the low temperature can have higher relative humidity. The maximum average relative humidity is 90%, while the average monthly minimum temperature is +25°C, and consider the temperature changes in product on the surface of the gel.
● Pollution Degree: 3.

TRIPPING CHARACTERISTIC CURVE

TEMPERATURE COMPENSATION

When the ambient temperature is not a benchmark of 30 degrees , the reference correction factor is as folows .

CONNECTION

DIMENSION

OUTLINE AND INSTALLATION DIMENSIONS