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IMO B4C1N20A MCB – 1P+N – C Curve – 20A – 4.5kA
IMO B4C1N20A 20A 1 pole plus neutral miniature circuit breaker with C curve tripping characteristic and 4.5kA breaking capacity for low-voltage circuit protection.
£9.26
Why Choose the IMO B4C1N20A Miniature Circuit Breaker?
The IMO B4C1N20A is a compact and dependable 1 pole plus neutral miniature circuit breaker (MCB) designed to protect electrical circuits against overloads and short circuits in residential, commercial and light industrial installations. As part of the IMO B4 MCB series, it provides practical circuit protection in a space-saving DIN rail mounted format.
This MCB features a C curve tripping characteristic, making it suitable for circuits with moderate inrush currents, including lighting, socket outlets, control circuits and general-purpose electrical loads. With a 4.5kA short circuit breaking capacity, the B4C1N20A is well suited to distribution boards, consumer units and control panels where reliable low-voltage protection is required.
Rated at 20A and designed for 230/415V AC systems, the IMO B4C1N20A offers dependable single-phase circuit protection with neutral switching. Its compact 1P+N configuration helps save space while providing effective isolation and protection in modern electrical installations.
Key Advantages
- Reliable 1 pole plus neutral miniature circuit breaker for circuit protection.
- 20A rated current suitable for low-voltage electrical installations.
- C curve tripping characteristic for moderate inrush loads.
- 4.5kA short circuit breaking capacity.
- Compact single module DIN rail mounting design.
- Suitable for distribution boards, consumer units and control panels.
Key Features
- IMO B4 miniature circuit breaker series.
- 20A rated current.
- C curve tripping characteristic.
- 4.5kA breaking capacity.
- 230/415V AC rated voltage.
- 1 pole plus neutral configuration.
- Single module width for compact installations.
- Right-hand neutral position.
- DIN rail mounting for electrical enclosures.
- Designed for overload and short circuit protection.
Reliable Single-Phase Circuit Protection
The IMO B4C1N20A automatically disconnects electrical circuits when overload or short circuit faults occur, helping protect cables, equipment and connected devices from electrical damage. Its C curve characteristic provides dependable performance for circuits where moderate starting currents may be present.
The 1 pole plus neutral design allows both the live conductor and neutral to be switched within a compact single-module format. This makes the B4C1N20A a practical choice for electrical contractors, panel builders and maintenance engineers working with space-conscious distribution boards and control panels.
Typical Applications
- Single-phase distribution boards.
- Residential consumer units.
- Commercial electrical installations.
- Lighting and socket outlet circuits.
- Control panels and automation enclosures.
- Building services electrical systems.
Technical Specifications
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| Current | 20 A | |
|---|---|---|
| Phase | Single Phase | |
| Poles | 1-pole + N | |
| Device Type | MCB | |
| Trip Curve | C curve | |
| Breaking Capacity | 4.5 kA | |
| Manufacturer | IMO Precision Controls | |
| Series | B4 | |
| Model | B4C1N20A | |
| Product type | Miniature circuit breaker (MCB) | |
| Rated current | 20A | |
| Number of poles | 1 Pole + Neutral | |
| Number of modules | 1 | |
| Neutral position | Right | |
| Tripping characteristic | C Curve | |
| Rated voltage | 230/415V AC | |
| Breaking capacity | 4.5kA | |
| Mounting type | 35mm DIN rail | |
| Terminal capacity | 1 to 10mm² flexible cable | |
| Operating temperature | -30°C to +60°C | |
| Standards | IEC/EN 60898, IEC/EN 60947-2, CE | |
| Dimensions (H × W × D) | approx. 85.5 × 17.6 × 78mm | |
| Weight | approx. 0.2kg | |
| HS Code | 8536201090 | |
| Country of Manufacture | China |
Frequently Asked Questions
What is the IMO B4C1N20A used for?
The B4C1N20A is used to protect single-phase electrical circuits against overloads and short circuits in distribution boards, consumer units and control panels.
What is the current rating of this MCB?
This miniature circuit breaker has a 20A rated current.
What does C curve mean on this circuit breaker?
A C curve MCB is designed for circuits with moderate inrush currents, making it suitable for general-purpose loads such as lighting, socket outlets and small electrical equipment.
What is the breaking capacity of the B4C1N20A?
The IMO B4C1N20A has a 4.5kA short circuit breaking capacity.
How is this miniature circuit breaker mounted?
The B4C1N20A is designed for installation on a standard 35mm DIN rail inside distribution boards and electrical control panels.
Trusted by Electrical Professionals Worldwide
IMO B4 miniature circuit breakers are trusted by electrical contractors, panel builders and maintenance engineers for compact installation, dependable circuit protection and reliable performance in low-voltage electrical systems.
