NDB3-30, 50 and 100 series of circuit breakers for equipment (hydraulic electromagnetic type) are applicable to electric power systems with rated current of up to 100A and rated voltages of AC480/277V (50/60Hz) and DC125V and below. NDB5 circuit breakers for equipment are applicable to electric power systems with rated current of 0.5~63A and multi-pole parallel to 150A and rated voltages of AC230/400V, AC250V, AC480/277V (50/60Hz) or DC80V and below The products can be used for overload and short circuit protection or non-frequent contact and breaking. They are widely used in computers and their peripheral equipment, industrial automation systems, telecommunication equipment, universal power supply systems, UPS equipment, railway locomotives, marine electrical systems, aerospace, control systems for elevators and mobile power equipment.Download
NDB1-63 dedicated to the low voltage power distribution system of industrial, buildings, energy communications and infrastructure.
NDB1L-32 RCBO is used in low-voltage terminal distribution for industry, civil building, energy, telecommunication and construction to do protection from short circuit, overload, leakage and overvoltage.
For protecting the circuit against overlord, short circuit, earth leakage, over-voltage, and prevent power accident.
NDB2 series circuit breakers provide short circuit protection, overload protection, control, isolation, etc. They are applicable to low-voltage terminal power distribution in such fields as industry, civil construction, energy, communications and infrastructure.
NDB2ZB Series DC MCB, with three-stage current protection of over-load long time delay, short circuit short time delay and short circuit instant tripping, is developed specifically for DC power system in power distribution projects. Combining with inferior circuit breakers to achieve the integral selective protection, it can enable the short circuit breakdown protection in the meantime effectively avoid malfunction of superior circuit breakers caused by the inferior short circuit so as to guarantee the system safety and stability.
NDB3 series circuit breaker for equipment is applied in electrical system* of which the rated current is up to 100A and the rated voltage is AC240/415V(50/60Hz) or up to DC80V, to protect the circuit against the overload current and short-circuit current. It is also can be used to make and break the circuit infrequently.The product is widely used in computer and its peripheral equipment,industrial automation devices, telecommunication equipments, power supply for telecommunication, UPS equipments, railway-engine, marine electrical systems, elevator control systems and mobile power equipments.
NDC1(Z)-09~95 series AC contactor (hereainfter “contactor”) is used in AC 50Hz/60Hz circuit with rated insulating voltage of 690V, rated working voltage of 400V and rated working current from 9A~95A in AC-3 utilisation type. It is used to making or breaking the circuit and for frequent start AC motors from a distance. It can also be used as electro-magnetic starter when matching with thermal relay to protect the circuit against possible overload.
NDC2 Series AC Contactor is mainly used in AC 50Hz/60Hz circuits with rated insulating voltage up to 1000V, rated working voltage of 400V and rated working current up to 170A in AC-3 utilisation type. It is used to making or breaking the circuit in power system. It can also compose the motor stater together with thermal overload relay or electronic protection device to protect the circuit against overload.
NDG2 series disconnecting switches are applicable to work in the low-voltage distribution or motor networks with AC frequency of 50Hz, rated operating voltages of AC380V, AC690V, DC500V and DC1000V and rated operating current of 125V-1600A, for the use of infrequent connection, circuit breaking and circuit isolation; NDG2 series disconnecting switch fuse combinations are applicable to work in the low-voltage distribution or motor networks with AC frequency of 50Hz, rated operating voltages of AC380V, AC690V and rated operating current of 63A-1250A, for the use of infrequent connection, circuit breaking and circuit isolation; Could provide protection functions for short circuiting and overload.
NDG3 series disconnecting switches apply to power systems with AC frequency of 50/60Hz, rated voltage of DC1000V and below, and rated current of 1250A and below. The product could be used in infrequent switching for isolating and breaking the line and providing safe isolation for low-voltage circuits in the field of PV.
NDM1 series miniature circuit breaker is used in low-voltage terminal distribution for industry, civil building, energy, telecommunication and construction to do protection from short circuit and overload, to control, to disconnect and protect DC systems.
NDM2 moulded case circuit breakers (hereinafter referred to as breakers) are applicable to work in the AC circuits with AC frequency of 50/60Hz, rated operating voltage of up to AC690V, and rated current of up to 800A, for the use of infrequent conversion and infrequent start of motor. The circuit-breakers provide overload, short circuit and undervoltage protection, and can protect the circuit and power supply device from damage. The products have been widely used in new energy, electric power, industrial control, real estate, electric and power supply, telecommunication, rail transportation, industrial (public) construction and other industries.
NDM3 series moulded case circuit breakers (hereinafter referred to as breakers) are applicable to work in the AC circuits with AC frequency of 50/60Hz, rated operating voltage of up to AC690V, and rated current of up to 800A for infrequent conversion and infrequent start of motor. At the same time, the circuit breaker provides the function of overload alarm without tripping; when the line is overloaded, circuit breaker with this function will not trip but only output overload signal to ensure the continuity of supply. The product can be used for 8 hours at 1.3 times of the rated current, and its performance remains unchanged after cooling. The circuit breaker can replace the thermal relay alarm program, provide overload, short circuit and undervoltage protection functions, and protect the circuit and power equipment from damage.
The NDM5-160 series of molded case circuit breakers (MCCBs) with the rated insulation voltage of 800V are applicable to the AC 50Hz or 60Hz circuits with the rated operating voltage of AC230V, AC400V and AC690V, and the rated operating current of 16A~160A for electrical energy distribution, as well as protection of circuits and power supply devices in case of overload, short circuit, undervoltage (With the UVT);, the products are also used to protect motors during infrequent starting, braking, overload, short circuit, etc..
Indoor application,AC50Hz/60Hz,440V,normally under35。 (occasionally up to 60。 ). Protection circuit breaker,switch,socket and similar inside electrical components from outside impact and invasion.
NDR1 electronic overload relay is used to protect overload of three-phase AC circuit and motor, overtime of starting period, phase loss and phase current unbalance. 3-stage thermal overload relay, used for motor protection, adjustable at 0.1~95A.
NDU series surge protective devices (SPDs) are used to protect surge caused by lightning or other transient overvoltage, discharge the large surge current on the power wire to the ground, and limit the overvoltage. They are applicable to protection of power supplies for industrial, construction, civil aviation, finance, securities, telecommunications, ports and other systems, suppression of transient over-voltage amplitude of lightning, over-voltage operation, etc., discharge of surge energy and protection of system circuit and equipment safety. Among them, NDU3 surge protective device can be installed within the lightning protection LPZ0B/LPZ1 zone to protect the overhead lines in a 50/60Hz AC power distribution system with rated operating voltage of 220/380V from non-attenuated direct lightning.
NDW1G series Switch Disconnector, of which rated insulation voltage is 1000V, rated operational voltage is AC 400V/690V or DC 1000V and rated current is from 400A to 6300A, is used in low-voltage power distribution network for making and breaking the main circuit and isolating.
NDW1 series Air Circuit Breaker (hereinafter “ACB”), of which rated insulation voltage is 1000V, rated operational voltage is 400V/690V and rated current is from 400A to 6300A, is used in AC 50Hz distribution network for power distribution and circuit and equipments protection against overload. undervoltage, short-circuit and single-phase grounding fault. Meanwhile, it can also be used as switch-disconnector. It has multi-function, high precision selective protection and can improve the reliability of power supply.
Accessories of NDB2-63, NDB2Z-63, NDB2T-63 and NDB2LE-63 series products, Mainly used for communication, transportation, new energy, intelligent control and other fields requiring remote control