Prevent unauthorised access to your circuit breaker with this locking device from Siemens. This versatile piece of kit is designed to work with MCBs from the 5SP, 5SY and 5TE8 series, so you can be sure of easy compatibility. To support workplace safety, it locks onto the handle of your breaker to make sure attached appliances stay off during maintenance and repairs. Thanks to its durable plastic construction, you can count on it to hold out against wear and impact without breaking a sweat. You'll typically find locking devices like this, as well as the breakers it's used with, in switchgear systems.

• Bright yellow colour makes it easy to see
• Precise moulding gives an accurate fit on your circuit breakers
• Light weight of 11g places minimal strain on equipment
• Assembly is simple and doesn't need tools, saving time and hassle

Yes. If you need additional security, this Sentron locking device is compatible with the 5ST3802 padlock (213-2588) in the same series.

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Type B characteristic offers instantaneous short circuit response level of 3-5 x normal rated current, making it suitable for circuits with moderate inrush currents such as filament lamps, heating loads and most domestic/small building protection applications.,Type C characteristic offers short circuit response of 5-10 x normal rated current, making it ideal for circuits with higher inrush currents such as motor control and fluorescent lighting installations in industrial buildings where nuisance tripping might occur if a faster type was used.