Many changes have occurred with RCD protection requirements, with a focus on improved safety whether you’re at home, at work or out and about. The challenge for electricians is often finding a suitable RCD for the switchboard and application it is being used for.
NHP MOD6 circuit protection offers a range of RCBO devices from 1P, 2P or 3P+N that have the same mounting footprint as a regular circuit breaker. This is perfect for loadcentre type applications found in a typical house or small commercial building. Many of these RCBOs are available in 30mA or 10mA sensitivities. One popular model - the MOD6 M6RCBS - comes complete with a neutral pigtail, allowing connection between a regular main-switch or MCB with standard 18mm buscomb.
For commercial or industrial applications, NHP’s DIN-T range of RCBOs offers solutions for distribution panelboard applications. These RCBOs are also available in compact versions, which save valuable wiring room compared to the traditional longer body housing. DIN-T includes either 6kA or 10kA short circuit ratings in 10mA, 30mA, 100mA and 300mA sensitivities.
In the past, one big challenge was finding an RCBO solution for 3 phase applications, as a device 5 or 6 poles wide would have been required, which takes up valuable space in a switchboard. There is now a perfect solution - NHP has just launched a 3P width RCBO, so upgrades to an RCBO have never been easier!
NHP’s DIN-T is a comprehensive range of RCDs from Type AC, Type A, Type F to Type B. It is important to select the correct type of RCD for the application as referred to in the wiring rules AS/NZS 3000 Cl 2.6.2.1. Manufacturers' instructions will usually provide guidance on the correct type of RCD to be used. Here is a basic explanation of the most common types of RCDs (please refer to the standard for more detail):
- Type A as per Type AC as well as residual pulsating direct currents
- Type F as per Type A as well as composite residual currents and more
- Type B as per Type A as well as residual alternating current up to 1000 Hz and residual direct current that may result from rectifying circuits.
For more information on NHP’s 3P RCBO solutions, please call your local NHP Account Representative or email us:
Australia - 1300 NHP NHP nhpsales@nhp.com.au
New Zealand - 0800 NHP NHP sales@nhp-nz.com
