"SD" Product Range:-
Combined
Emergency Disconnect
And Line Contactor
These switches combine the dual function of a manual
disconnect and coil operated line contactor. 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.
All the switches have double breaking main contacts with silver alloy contact
tips which are weld resistant, hard wearing and have excellent
conductivity.
Modes of Operation: The operation of the SD150A & SD250A switches is such that with the operating knob depressed ie. in the "Off" position, no electrical functions can take place. However, if the knob is in the "On" position, the option of energising the coil and thus closing the main contacts becomes available. The coil energisation can be carried out either through the vehicle keyswitch or as a result of a signal from the vehicle electronic controller.
When the SD150A & SD250A switches are used as an emergency battery disconnecting switch, manually depressing the operating knob will override the energised coil such that the main contact and the auxiliary contact will open until such time as the knob is again moved to the "On" position.
This is by no means the full range available and interested parties are advised to contact Albright, or an appointed distributor, to discuss their requirements further.
| Type | Configuration | Continuous Thermal Current |  |
| SD150A | Combined Manual Disconnect and Line Contactor Single Pole On/Off |
125A | |
| SD250A | Combined Manual Disconnect and Line Contactor Single Pole On/Off |
250A |
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