IMO RCBO - B6CR1N - 40A - 2P - 30mA - Type A
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Product Information
Full details
This IMO Residual Current Circuit Breaker with Overload (RCBO) is designed for electricians and homeowners needing robust protection for electrical installations. Its key benefit is safeguarding against earth fault leakage current, overload, and short circuits in a single unit. A caveat is that installation requires professional electrical knowledge.
All features
| Series | B6CR1N |
|---|---|
| Model Part Number | B6CR1N40-30-A |
| Brand | IMO |
Extended Product Information
FAQs
What does 'Residual Current Circuit Breaker with Overload' (RCBO) mean?
An RCBO combines the functions of a Residual Current Device (RCD) and an Overcurrent Protection Device (like a Miniature Circuit Breaker - MCB). It protects against electric shock (earth faults) and against overloads and short circuits.
What is the significance of '30mA'?
30mA (milliamps) refers to the residual current sensitivity. The device will trip when it detects a leakage current of 30mA or more to earth, which is generally considered the threshold for causing serious harm to a person.
What does 'Type A' mean for this RCBO?
Type A RCBOs are designed to detect both AC (alternating current) and pulsating DC (direct current) residual currents. This provides protection against a wider range of fault conditions compared to Type AC devices.
Can I install this myself?
No, due to the critical safety functions of an RCBO, it must be installed by a qualified electrician in accordance with all applicable electrical regulations.
What is the difference between an RCD and an RCBO?
An RCD only provides protection against earth leakage faults. An RCBO provides protection against earth leakage faults *and* overcurrents (overloads and short circuits).
How do I test if the RCBO is working correctly?
Most RCBOs have a built-in test button labelled 'T' or 'Test'. Pressing this button simulates a fault condition and should cause the RCBO to trip. This should be performed regularly (e.g., monthly) as part of electrical maintenance.
What does '40A' and '2P' mean?
'40A' is the current rating, meaning the circuit can handle up to 40 Amperes continuously. '2P' means it is a double-pole device, switching and protecting both the live and neutral conductors.
Troubleshooting
RCBO trips immediately upon reset
This indicates a persistent earth fault leakage current, overload, or short circuit in the connected circuit. Disconnect all loads from the circuit and attempt to reset the RCBO. If it holds, reconnect loads one by one to identify the faulty appliance or wiring. If it still trips with no loads connected, consult a qualified electrician.
RCBO does not trip when the test button is pressed
The RCBO may be faulty or the test button mechanism is not functioning. Do not rely on this RCBO for protection. Replace the unit immediately and have it inspected by a qualified electrician.
RCBO trips intermittently without apparent cause
This could be due to minor leakage currents from multiple sources, sensitive equipment, or a developing fault. Consult a qualified electrician to investigate potential issues within the wiring or connected appliances.
Pros and Cons
Pros
- Provides comprehensive protection against multiple fault types.
- Saves space by integrating two protective devices into one.
- High 40A rating suitable for various applications.
- 30mA sensitivity offers effective protection against electric shock.
- Type A detection covers a wider range of fault currents.
Cons
- Requires professional installation due to its electrical nature.
- May be over-specified for very low-load circuits.
- Specific Type A detection might not be necessary for all simple AC circuits.
Setup, Compatibility & Care
Setup:
Installation of this RCBO must be performed by a qualified electrician in accordance with local wiring regulations. It requires mounting onto a standard DIN rail within an appropriate electrical enclosure. Ensure the correct terminations for live, neutral, and load are made.
Compatibility:
This 2-pole RCBO is designed for use in standard AC electrical systems. It is compatible with most modern modular electrical distribution boards. Ensure the upstream supply and downstream loads are within the RCBO's rated 40A capacity and voltage limits.
Care:
Regular inspection of the RCBO is recommended as part of general electrical maintenance. Keep the unit clean and free from dust and moisture. Periodically test the device using its built-in test button to ensure the tripping mechanism is functional. Refer to the manufacturer's manual for specific testing frequencies.