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SD300

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EAVY

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UTY

D.C. B

ATTERY

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ISCONNECTING

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WITCH

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International announces a new addition to the ED & SD ranges of Battery Disconnection Switches: SD300 — This replaces the SD250 series. The SD300 combines the dual function of a manual disconnect and coil operated line contactor and the benefits of this design include compact size and reduced installation costs combined with an electrical capacity sufficient for most small and medium size electric vehicles.

SD300A

PERFORMANCE DATA

Thermal Current Rating (100%): 300 Ampere Intermittent Current Ratings: 30% - 550 Ampere 60% - 400 Ampere 40% - 480 Ampere 70% - 360 Ampere 50% - 450 Ampere Typical Inductive Fault Currents that can be ruptured (5ms time Constant): SD300 1000 Amperes at 48V D.C. SD300B 1000 Amperes at 80V D.C. Maximum Recommended Contact Voltages: SD300 48V D.C. SD300B 96V D.C. Typical Voltage Drop across New Contacts per 100 Ampere: 30mV Mechanical Life: Manually Operated > 10,000 Electrically Operated > 3,000,000 Coil Power Dissipation: Intermittently Rated Types: 30 - 40 Watts Continuously Rated Types: 10 - 15 Watts Maximum Pull-in Voltage (Coil at 20
o C): Intermittently Rated Types: 60%V Continuously Rated Types: 66%V Typical Drop-out Voltage (Coil at 20
o C): 10-25% CONTACT PERFORMANCE Dimensions in mm Typical Pull-in time (contacts to close): 30ms Typical Drop-out time (contacts to Open): Without Suppression: 8ms With Diode Suppression: 60ms With Diode and Resistor (depending on value): 25ms Typical Contact Bounce Period: 3ms Auxiliary Contact Thermal Current Rating: Auxiliary Contact Switching Capacities (Resistive 5 Ampere Load): 5A at 24V D.C. 2A at 48V D.C. 0.5A at 240V D.C.

Please Note: All Performance data provided should be used as a guide only. Some de-rating or variation from these figures may be necessary accord- ing to type and application.

Albright is registered under BS EN ISO 14001—Environmental Management System. Should you require information on the disposal of our products, please contact the Health, Safety & Environmental Manager of your Local Supplier for Disposal Guidance Note.

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International Limited 125 Red Lion Road, Surbiton Surrey KT6 7QS, England Tel: +44 (0) 20 8390 5357 Fax: +44 (0) 20 8390 1927 E-mail: technical@albright.co.uk sales@albright.co.uk

Web Site: www.albrightinternational.com

Rev.4 Sept 2008