Longna Electric Co., Ltd products

LNQ1 series automatic power transfer switch is mainly composed of power switch actuator, circuit breaker and controller. LNQ1 series automatic power transfer switch is mainly composed of power switch actuator, circuit breaker and controller. This dual power switch has automatic, manual, power supply indication, normal closing indication, standby closing indication and other working states. The switch has the characteristics of small size, long life, low power consumption, light weight, stable work and convenient use.

Dual power automatic switch is sui table for 50 or 60Hz rated 400VAC emergency power supply system. ATS has the characteristics of solidstructure,reliable conversion, easy installation an dmain tenanceand long life.

Dual power automatic switch is suitable for 50 or 60 Hzrated 400VA Cemergency power supply system. AT Shas the characteristics of solid structure, reliable conversion, easy installation and maintenance and long life.

LNDZ47-63 high breaking miniature circuit breaker has the features of structure advanced, performance reliable, breaking capacity high, appearance elegant and its shell and parts are made of material with impact resistance, strong flame-retardant feature.

LNDZ47-63 high breaking miniature circuit breaker has the features of structure advanced, performance reliable, breaking capacity high, appearance elegant and its shell and parts are made of material with impact resistance, strong flame-retardant feature.

LNM1 series of moulded case circuit breaker is one of our new type products developed and manufactured by adopting international advanced technology. It is supplied with rated insulating voltage 800V and used for circuit of A.C. 50/60Hz, rated operating voltage AC 400V.

The electronic moulded case circuit breaker (hereinafter referred to as circuit breaker) is suitable for AC 50/60Hz power grid with rated insulation voltage of 80V, rated current of 16A-800A and rated working voltage of 400V low voltage. The circuit breaker is equipped with intelligent tripping device, which not only increases the selection range of setting current, but also has three-section protection functions of overload long delay, short circuit short delay and short circuit instantaneous protection.

LNSP-A40 series surge protective device (hereinafter referred to as the SPD) is suitable for low voltage AC power distribution system such as IT,TT,TN-C and TN-C S etc., it protect against the influence from the indirect lightning and direct lightning or other transient over voltage surge.

LNSP-A40 series surge protective device (hereinafter referred to as the SPD) is suitable for low voltage AC power distribution system such as IT,TT,TN-C and TN-C S etc., it protect against the influence from the indirect lightning and direct lightning or other transient over voltage surge.