Albright International

SD250

NO - SP - ST

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.

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The SD250 has the following optional components available :

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Technical Information

Application Interrupted Uninterrupted
Thermal Current Rating 250A 250A
Intermittent Current Rating:
30% Duty 455A 455A
40% Duty 395A 395A
50% Duty 355A 355A
60% Duty 325A 325A
70% Duty 300A 300A
Rated Fault Current Breaking Capacity (Icn) 5ms Time Constant: (In accordance with UL583*)
Blowouts 1000A at 96V D.C.
No Blowouts 1000A at 48V D.C.
Rated Fault Current Breaking Capacity (Icn) Resistive Load: (In accordance with UL508*)
Blowouts -
No Blowouts -
Maximum Recommended Contact Voltages
Blowouts 96V -
No Blowouts 48V -
Typical Voltage Drop per pole across New Contacts at 250A 30mV
Mechanical M.T.B.F >3000000 Operations
Coil Voltage Available (Us) (Rectifier board required for A.C.) 30 - 250V

Features

Component Configurations
Auxiliary
Auxilary---Standard
STANDARD
Coil Suppression
Suppression---Diode
DIODE
Suppression---Resistor-and-Diode
DIODE AND RESISTOR
Suppression---Bi-Directional-Diode
BI-DIRECTIONAL DIODE
Coil Terminations
Coil Termination - Standard
AMP TAGS

Downloads

Resources
SD250 Catalogue Data Sheet Download
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