The Niglon MCB6B1-16 16A Type B Miniature Circuit Breaker is a single-pole protective device designed to provide overload and short-circuit protection for suitable domestic and light commercial electrical circuits.
Featuring a 16 Amp current rating, Type B tripping characteristic and 6kA breaking capacity, the MCB6B1-16 is suitable for appropriately designed electrical circuits, including certain radial socket circuits, lighting circuits and other applications requiring 16A overcurrent protection.
Manufactured in accordance with BS EN 60898-1, this compact circuit breaker provides DIN rail mounting, bi-directional operation, a single-module width and terminals accepting conductors up to 25mm².
16A Type B Circuit Protection
The Niglon MCB6B1-16 has a rated current of 16A and a Type B tripping characteristic, providing overcurrent protection for appropriately designed electrical circuits.
Type B miniature circuit breakers are commonly selected for circuits with relatively low starting currents, where the connected equipment does not produce excessive inrush current during normal operation.
The breaker automatically disconnects the circuit when an overload or short-circuit fault causes it to trip, helping protect electrical wiring against the effects of excessive current.
Type B Tripping Characteristic
The Type B tripping characteristic provides instantaneous magnetic operation at approximately 3 to 5 times the rated current.
For a 16A Type B MCB, this corresponds to an instantaneous magnetic tripping range of approximately 48A to 80A.
This makes the device suitable for appropriately designed circuits where rapid disconnection under fault conditions is required and the normal equipment starting current is relatively low.
6kA Short-Circuit Breaking Capacity
The Niglon MCB6B1-16 has a 6kA (6000A) rated short-circuit breaking capacity in accordance with BS EN 60898-1.
This specifies the breaker's ability to safely interrupt short-circuit faults within its approved operating and test conditions.
The prospective fault current at the installation must be assessed to ensure that the selected circuit breaker has an appropriate breaking capacity.
Single Pole DIN Rail Mounting
The Niglon MCB6B1-16 is a single-pole miniature circuit breaker designed for installation onto a compatible standard DIN rail.
Its compact single-module construction occupies approximately 18mm of DIN rail space, making it suitable for compatible consumer units and electrical distribution equipment.
The front-mounted operating lever allows the circuit to be manually switched on or off and reset following a trip, once the cause of the fault has been identified and corrected.
Bi-Directional Operation
Niglon specifies the MCB6B1-16 as bi-directional, allowing current to flow in either direction through the protective device within its approved operating conditions.
This provides additional flexibility for suitable electrical distribution arrangements, subject to the manufacturer's instructions and compatibility with the complete electrical installation.
Bi-directional operation does not remove the need to verify the installation requirements of the consumer unit, busbar arrangement or connected equipment.
25mm² Maximum Cable Capacity
The Niglon MCB6B1-16 features screw terminal connections with a manufacturer-specified maximum cable capacity of 25mm².
The recommended terminal tightening torque is 2.5Nm, helping ensure secure electrical connections when installed using suitable conductors and the correct termination method.
The selected conductor size must be appropriate for the circuit design and comply with the manufacturer's terminal requirements.
Suitable for Domestic & Light Commercial Circuits
The MCB6B1-16 can be used to provide overcurrent protection for a range of suitably designed electrical installations.
Typical applications may include:
- 16A radial socket circuits
- Suitable lighting circuits
- Dedicated electrical appliance circuits
- Domestic electrical distribution
- Light commercial distribution circuits
- Compatible consumer units and distribution equipment
The suitability of a 16A Type B MCB depends on the connected load, conductor size, installation method, fault conditions and any additional protection requirements.
BS EN 60898-1 Compliant
The Niglon MCB6B1-16 is manufactured in accordance with BS EN 60898-1, the standard for miniature circuit breakers providing overcurrent protection in household and similar installations.
Niglon lists Semko certification, CE marking and UKCA marking for this range of miniature circuit breakers.
The device should be installed by a suitably qualified person within compatible electrical distribution equipment.
Key Features
- Manufacturer: Niglon
- Part Number: MCB6B1-16
- 16 Amp rated current
- Type B tripping characteristic
- 6kA short-circuit breaking capacity
- Single-pole circuit protection
- 230V AC rated voltage
- Bi-directional operation
- Standard DIN rail mounting
- Compact single-module width
- Maximum cable capacity of 25mm²
- 2.5Nm terminal tightening torque
- Overload and short-circuit protection
- BS EN 60898-1 compliant
- Semko certification, CE and UKCA markings
- Suitable for appropriately designed domestic and light commercial circuits
Technical Specifications
| Manufacturer | Niglon |
| Manufacturer Part Number | MCB6B1-16 |
| HEM Model / SKU | NIG16MCB |
| Product Type | Miniature Circuit Breaker (MCB) |
| Rated Current | 16A |
| Tripping Characteristic | Type B |
| Breaking Capacity | 6kA (6000A) |
| Rated Voltage | 230V AC |
| Number of Poles | 1 Pole |
| Bi-Directional | Yes |
| Mounting Type | DIN Rail |
| Module Size | Single Module |
| Nominal Width | 17.8mm |
| Nominal Height | 82mm |
| Maximum Cable Capacity | 25mm² |
| Terminal Tightening Torque | 2.5Nm |
| Standard | BS EN 60898-1 |
| Certification / Marking | Semko, CE, UKCA |
Dimensions are based on Niglon's current range drawing. The MCB must be selected and installed in accordance with the manufacturer's instructions and current electrical installation requirements. Consumer unit compatibility should be verified before installation. An MCB provides overcurrent protection and does not replace an RCD or RCBO where residual-current protection is required.
Why Choose the Niglon MCB6B1-16?
The Niglon MCB6B1-16 16A Type B Miniature Circuit Breaker combines reliable overcurrent protection with compact DIN rail mounting and a straightforward single-pole design.
Its 16A rating and Type B tripping characteristic make it a practical option for correctly designed electrical circuits, while the 6kA breaking capacity and BS EN 60898-1 compliance provide the protection expected from a professional miniature circuit breaker.
With bi-directional operation, 25mm² maximum terminal capacity and 2.5Nm tightening torque, the MCB6B1-16 provides a versatile solution for suitably designed domestic and light commercial electrical installations.
Any orders below £75 subject to £6.00 carriage
- Stock: 8
- Model: NIG16MCB
- SKU: NIG16MCB
- MPN: MCB6B 116
