The 5SY6120-7 Circuit Breaker from Siemens is a single pole, non-adjustable, DIN-Rail mounted, thermal-magnetic, miniature circuit breaker (MCB). It is rated to 230/400VAC (20A) and uses a standard Character C trip curve. This circuit breaker can be integrated into a variety of Low Volt Switchgear Solutions. It is suitable for domestic installations, lighting, small motors, heating and air conditioning applications. Its DIN rail format allows for easy installation in existing MCB busbar solutions, making it easier and faster to make modifications. It also features a thermomagnetic release mechanism which provides short-circuit protection at higher levels and gives accurate tripping within 1-2 seconds. Additionally, the latchable handle indicates when the breaker has tripped and a visible window indicates the breaker’s uptime/downtime status.