Circuit Protection

Due to the relative unpredictability of today’s technology, circuit protection is an absolute must in designs that need to be reliable.

What is circuit protection?

Circuit protection is the intentional installation of a “weak link” in an electrical circuit. This is a fuse or circuit breaker, referred to here as a circuit protection device or CPD.

Langir can provide DC Circuit Breaker, Thermal Protection and Accessory. It can apply on Railway, Power, Home and Building. Langir provides IEC 60947-2, EN60947-2 and GB 14048.2

Snap Action Thermostat

KSD301 snap action thermostat series is a small-size bimetal thermostat series with a metal cap,which belongs to thermal relays family. The main principle is that one function of bimetal discs is snap action under the change of sensing temperature. The snap action of disc can push the action of the contacts through the inside structure, then caused on or off of the circuits finally. The main characteristics are the fixation of working temperature, the reliable snap action, less flashover, longer working life and less radio interference.

CQC, TUV Applicable

DC Circuit Breaker – Miniature Circuit Breakers for DC and Solar Generation

The JB is a DC circuit breaker dedicated to multi-string photovoltaic installations. This DC circuit breaker is designed to protect the cables located between each string of photovoltaic modules and the photovoltaic inverter against overloads and short DC circuits.
IEC 60947-2, EN60947-2, GB 14048.2