Circuit Protection
NHP offers a broad range of circuit protection products to suit a variety of industries and applications including circuit breakers and earth leakage protection relays. NHP's range of circuit breakers features a complete range of quality products for the protection of an electrical installation against overcurrent’s and short circuits in industrial, commercial, and domestic applications. The range of circuit breakers includes air circuit breakers (ACBs), moulded case circuit breakers (MCCBs) and miniature circuit breakers (MCBs). Earth leakage relays detect ground faults and abnormal leakage currents. These protective measures ensure circuit integrity, prevent equipment failure, and enhance overall electrical system safety.
Product Family
Air Circuit Breakers
Air Circuit Breakers (ACBs) serve as the primary protective devices in large switchboards or for directly powering significant equipment. They automatically disconnect the power supply in the event of faults or overloads, ideal for use in large buildings, manufacturing sites and projects with a high demand for low voltage power. Assembled locally in a compact frame, they range from 800A to 6300A.
Earth Leakage Relays
NHP’s earth leakage range is a comprehensive offering with a wide range of specific applications. Mounting solutions include surface mount; 2P/4P DIN rail mount; 48/72/96mm panel mount; and an AS/NZS2081 mining specific solution. The 2P DIN rail mount offers Type B protection, all offer Type A protection and sensitivity 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 to 125A; typically in 6kA and 10kA fault levels for domestic light commercial applications to commercial, industrial and mining solutions. Accessories include auxiliaries, shunt trip, pin terminals, busbar comb and captive locks. A proven history for performance and reliability to the market for over 3 decades.
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. Ideal for use in switchboards or for direct power supply to large equipment with protection ranging from 20A to 3200A, suitable for AC and DC voltages.
Residual Current Devices
NHP's residual current devices offer earth leakage solutions from 6A through to 100A. Available in Type A, for general purpose use, through to Type F and B for more complex loads. Sensitivities range from 10mA for body protected areas, 30mA for general purpose use to 100mA and 300mA for plant and equipment. Retrofit solutions offered for MCB to RCBO for 1 phase and 3 phase applications.