Eaton CG5V8GWUMUB611 Miniature Circuit Breaker

The CG5V8GWUMUB611 is a single-pole miniature circuit breaker (MCB) from Eaton's CG5 series, designed for protection against overload and short-circuit currents in final circuits. With a C-curve characteristic, it is suitable for circuits with moderate inrush currents, such as lighting and socket outlets.

Electrical Ratings

This MCB is rated at 6A (In) for operational voltage 230/400V AC (50/60Hz). It complies with IEC 60898-1, with a breaking capacity of 10kA. The insulation voltage is 440V. The C-curve trips between 5 and 10 times In (30-60A for magnetic release), ensuring fast disconnection for short-circuits while withstanding normal switching surges.

Construction and Design

The CG5V8GWUMUB611 features a compact 1-module width (17.5mm) housing, made of high-strength thermoplastic with IP20 protection (terminals). The toggle switch indicates ON/OFF status and can be locked with a padlock in the OFF position for safety. Terminals accept wires up to 25mm² (copper) and are tunnel-type with IP2X finger protection. A bi-metal thermal element provides inverse time-delay overload protection, while a solenoid coil provides instantaneous magnetic protection.

Mounting and Accessories

The MCB snaps onto standard 35mm DIN rail (EN 60715) and can be installed in any orientation. It accepts a range of accessories: auxiliary switches (indicating contact position), shunt trips, undervoltage releases, and busbars for grouping. All accessories clip onto the side without increasing width.

Environmental Specifications

Operating temperature: -25°C to +55°C. Storage: -40°C to +70°C. It is resistant to humidity and thermal stress. Pollution degree 2. It meets IEC 60947-2 also (for industrial applications).

Certifications

The CG5 series carries CE, CCC, and other international marks. It is designed to meet the requirements of low-voltage directives and is suitable for residential, commercial, and light industrial distribution boards.

Applications

Typical uses include protection of lighting circuits, small appliances, and control transformers. The C-curve ensures compatibility with loads that have moderate inrush, such as fluorescent lights with electronic ballasts or small motors.