BG Bi-Directional MCB B Curve Single Pole 16A CUMB16

BG CUMB16 — 16A B Curve Single-Pole Bidirectional MCB (6kA, 1 Module)

The BG CUMB16 is a 16A B-curve single-pole bidirectional MCB designed for reliable overload and short-circuit protection on general-purpose domestic and light-commercial circuits. Its bidirectional operation ensures safe tripping even when current may flow in either direction—ideal for installations that incorporate solar PV, battery storage or other back-feed capable systems.

With a slim 17.85mm single-module width, the CUMB16 fits neatly into BG consumer units and standard 35mm DIN-rail enclosures.

Reliable Protection for Everyday Circuits

The B-curve tripping characteristic provides fast response on low-inrush circuits such as lighting, small power radial circuits and mixed-use domestic loads. Combined with a 6kA breaking capacity, the CUMB16 delivers secure fault protection suitable for a wide range of applications, including:

Lighting circuits

Small appliance radials

Utility room and garage circuits

General domestic distribution

Engineered for ease of installation and robust long-term performance, the CUMB16 includes:

Positive contact status indication

PZ2 screw terminals

Terminal capacity up to 16mm² (10–32A models)

–25°C to +40°C operating temperature

4,000 electrical and 10,000 mechanical endurance cycles

These features ensure consistent performance and a reliable, long-lasting protective device.

Key Features of the BG Bi-Directional MCB 16A Include:

• 16A B-Curve Bidirectional Single-Pole MCB
• Suitable for PV, Battery Storage & Back-Feed Capable Systems
• 6kA Breaking Capacity for Dependable Fault Protection
• Compact 1-Module (17.85mm) DIN-Rail Design
• Positive Contact Status Indication
• PZ2 Screw Terminals with Up to 16mm² Cable Capacity
• Operating Temperature Range: -25°C to +40°C
• Durable Mechanism: 4,000 Electrical & 10,000 Mechanical Operations
• IEC/EN 60898 Compliant

View all BG MCBs

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