Circuit Protection
NHP offers a broad range of circuit protection products to suit a variety of industries and applications. This includes air circuit breakers, moulded case circuit breakers and miniature circuit breakers for protection against overcurrent’s and short circuits and Earth leakage relays for the detection of ground faults and abnormal leakage currents, preventing equipment failure and enhancing safety.
Product Family
Air Circuit Breakers
Air Circuit Breakers (ACBs) are primary protective devices in large switchboards, disconnecting power in case of short circuits or overloads. They are ideal for large buildings, manufacturing sites and infrastructure projects needing low voltage power. NHP offers ACBs from 800A to 6300A in a compact frame, available in a variety of options, which provide optimum solutions to the challenges of designing highly reliable and safe power systems. The Terasaki TemPower 2 ACB ensures power supply conti...
Earth Leakage Relays
NHP’s earth leakage range is a comprehensive offering which meets a wide range of specific applications. This is due to the variety of mounting solutions; surface mount; 2P/4P DIN rail mount; 48/72/96mm panel mount; and an AS/NZS2081 mining specific solution. All offer Type A protection and a 2P DIN rail mount offers Type B protection. These earth leakage relays have sensitivities settings from 30mA to 30A, with time delays from 0 to 5 seconds.
Miniature Circuit Breakers
NHP's miniature circuit breakers offer a broad range of current ratings from 0.5A through to 125A; typically in 6kA and 10kA fault levels for domestic light commercial applications through to commercial, industrial, and mining solutions. To complement the range further there are a number of value add accessories such as auxiliaries, shunt trip, pin terminals, busbar comb and captive locks. NHP's miniature circuit protection range has a proven history for performance and reliability to the market...
Moulded Case Circuit Breakers
Moulded Case Circuit Breakers (MCCBs) function by automatically disconnecting the power supply when a short circuit fault is detected downstream or when the circuit becomes overloaded, surpassing the current capacity of the electrical cables. MCCBs are the typical choice of breaker in switchboards or for direct power supply to large equipment. They are particularly well-suited for commercial and industrial applications that demand a higher capacity for low voltage power compared to miniature cir...
Residual Current Devices
NHP's residual current devices offer earth leakage solutions from 6A through to 100A. Residual current solutions can be provided in Type A, for general purpose applications, through to Type F and B for more complex loads. Sensitivities range from 10mA for body protected areas, 30mA for general purpose applications through to 100mA and 300mA for plant and equipment protection. NHP's range also offers perfect retrofit solutions from MCB to RCBO for both 1 phase and 3 phase applications: with the r...
