RCBO’s
TP&N board RCBOs are single module protective devices that give individual circuits in a three phase board combined overcurrent and 30mA earth leakage protection. We stock Live Electrical Type A high immunity RCBOs in 6A, 10A, 16A, 20A, 32A and 40A ratings, designed to suit Live three phase distribution boards.
Trade customers buy at account rates, and in-stock RCBOs ordered before 5pm Monday to Friday reach sites throughout NI and the Republic of Ireland the next working day.
Selecting RCBOs for a three phase board
In a TP&N board, RCBOs protect single-phase final circuits taken from each of the three phases. Giving every circuit its own RCBO means an earth fault trips only the circuit concerned.
Specifications to check
- Rated current - from 6A for lighting to 40A for heavier single-phase loads, selected to protect the circuit cable.
- Sensitivity - 30mA, for additional protection against electric shock.
- Type A - detects AC and pulsating DC residual currents produced by much modern electronic equipment.
- High immunity - designed to reduce nuisance tripping caused by transients and switching surges.
- Single module width - one position per circuit, making the most of each way.
Board compatibility
Use RCBOs from the same manufacturer as the board so they fit the busbar and cover correctly. These Live Electrical RCBOs are intended for the Live TP&N boards in our range. Three phase loads such as motors need a multi-pole device, so pair those with triple pole MCBs and appropriate RCD protection where required.
Installation tips
Balance RCBO circuits across L1, L2 and L3, connect the neutral as instructed by the manufacturer, and label each circuit with its phase. Test every RCBO with an RCD tester after installation; suitable testers can be found in our electrical testing equipment range. Confirm the design against current wiring regulations.
Ordering from Meteor Electrical
We are a family-run wholesaler with a 200,000 sq ft warehouse in Cookstown and depots in Cashel and Saggart. Delivery is free over £30 / €35 ex VAT, and Click & Collect is available from the trade counter.
FAQ's
- What are RCBOs?
- How does RCBOs work?
- When would I use RCBOs?
- Can I fit RCBOs myself?
- What is the difference between RCBOs and RCDs?
- What is the difference between MCBs and RCBOs
- Can single module RCBOs be used in a three phase board?
- What does high immunity mean on an RCBO?
- Do I need a 3 pole RCBO for a three phase motor?