SD250A-1 Albright 24V On-Off Single-pole Emergency Stop Switch - Continuous

 Albright International 250A 24V continuous, On-Off single-pole heavy-duty emergency battery disconnect switch.

• The SD250 combines 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 small and medium-size electric vehicles.
• 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.
• Rated 250 amps, 24Vdc Continuous.
• Single pole.
• Internal fixing screws at 48mm centres.
• Two M8 hex bolts for battery cable fixing.

Dimensions

• 25mm diameter shaft clearance or panel hole.
• Total height including button: Approximately 170mm.

Body Beneath Panel Hole Dimensions

• Width: 62mm.
• Depth (excluding terminal bolts): 56mm.
• Length: 104mm.

About The Albright SD250A-1 Emergency Stop Switch

 Typically used on 24 Volts DC systems as an On-Off emergency stop solenoid or kill switch.

 The SD250 has been designed to provide a rapid means of disconnecting batteries or other power supplies in the event of serious electrical faults.

 The operation of the switch is such that with the operating knob depressed i.e. 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 used as an emergency battery disconnect switch, manually depressing the operating knob will override the energised coil such that the main contact and the auxiliary contact (where fitted) will open until such time as the knob is again moved to the “on” position.

 The SD250 has been designed to provide a rapid means of disconnecting batteries or other power supplies in the event of serious electrical faults.

 The SD250 combines 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 small and medium-size electric vehicles.

 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.

Specifications