Miniature motor circuit breaker GB 0.5A 1P GB2CB05

Schneider Electric miniature circuit breaker – reliable motor protection

This GB2CB05 miniature motor starter from Schneider Electric is a compact and efficient solution for protecting electric motors. Designed for both professional installers and end-users, it provides reliable protection against overloads and short circuits, minimizing the risk of damage and downtime. This circuit breaker is part of the renowned Tesys series, known for its high quality and durability.

Functionality and application

The GB2CB05 circuit breaker is designed to protect single-phase circuits with a voltage of 250V and a rated current of 0.5A. Its compact dimensions (1 module wide, 74mm deep) allow for easy installation in electrical panels with limited space. The rated short-circuit breaking capacity of 50kA at 230V guarantees an effective response in the event of a failure. The cross-section of the connectable multi-wire cable from 0.75 to 4 mm² and single-wire cable from 0.75 to 6 mm² provides flexibility in connecting different types of cables.

Key features and benefits

• Compact size: Only 1 module wide makes it easy to install in tight panels – saving space in the control cabinet.
• High short-circuit breaking capacity: Ensures effective protection of the electrical installation in the event of a short circuit – minimizes the risk of damage and fire.
• Wide operating temperature range: Ability to operate at temperatures from -20°C to 60°C allows for use in various environmental conditions – reliability even in harsh conditions.
• Versatility: Designed for AC circuits with a voltage of 250V, making it compatible with most standard installations – a wide range of applications.
• Compliance with standards: Meets the requirements of overvoltage category III and pollution degree 2, guaranteeing safety and reliability – operation certainty in accordance with applicable regulations.
• Solid construction: Made of high-quality materials, ensuring long-lasting and trouble-free operation – an investment for years.

Technical parameters in practice

The GB2CB05 circuit breaker is characterized by a “Other” tripping characteristic, which means that its response time is adapted to the specifics of motor loads. This means that the circuit breaker allows for short-term current surges during motor start-up, while still providing a quick response in the event of an overload or short circuit. The rated insulation voltage Ui is 250V, and the rated impulse withstand voltage Uimp is 4kV, providing a high level of insulation safety. The IP20 degree of protection means protection against finger contact and against solid objects larger than 12.5 mm – basic protection against accidental contact with live parts.