ED520 Double Pole Single Throw
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ED520 Double Pole Single Throw On/Off (Part of the Emergency/Combined Disconnect Series) The ED520 range of switches have been designed to provide a rapid means of disconnecting batteries or other power supplies in the event of serious electrical faults. Whilst the switches are primarily intended for use with battery powered vehicles they are also suitable for use with static power systems. All types are capable of safely rupturing full load battery currents in the event of an emergency. • Uninterrupted current - no or infrequent load switching requirements (maintains a lower contact resistance). The ED520 is a manually operated device with a snap action for both opening and closing of the main contacts. The ED520 is easy to install (see drilling details) and can be mounted using the main terminal busbars or secured with supplied M5 posidrive mounting screws on the frame of the device. Precautions: The switch is to be used to rupture current in an emergency or as a no-load isolator. Do not use as a regular On-Load Switching Device. The Use of Battery Disconnecting Switches in Electric Vehicles Modern battery powered electric vehicles are inherently very reliable and safe. However, even when sophisticated electronic controllers are used it is desirable to have a means of disconnecting the battery in the event of an emergency, such as a vehicle failing to stop or an electrical short circuit. In many countries it is mandatory to fit one or more devices to achieve an emergency disconnection of the battery. Uninterrupted Current Performance data provided should be used as a guide only. Some de-rating or variation from figures may be necessary according to application Thermal current ratings stated are dependant upon the size of conductor being used For further technical advice email: technical@albrightinternational.com Albright reserve the right to change data without prior notice Albright International Ltd, Evingar Trading Estate, Ardglen Road, Whitchurch, Hampshire, RG28 7BB, UK Tel: +44 (0)1256 893060, Fax: +44 (0)1256 893562, Dedicated Sales Tel: +44 (0)1256 890030, Fax: +44 (0)1256 890043 E-mail: sales@albrightinternational.com or technical@albrightinternational.com Web Site: www.albrightinternational.com Copyright © 2015 Albright International Ltd