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SD300AB-4 Albright 48V Emergency Stop Switch with Auxiliary - Comtinuous

SD300AB-4 Albright 48V Emergency Stop Switch with Auxiliary - Comtinuous
SD300AB-4 Albright 48V Emergency Stop Switch with Auxiliary - Comtinuous
SD300AB-4 Albright 48V Emergency Stop Switch with Auxiliary - Comtinuous
SD300AB-4 Albright 48V Emergency Stop Switch with Auxiliary - Comtinuous
£94.54 Excl. VAT
(£113.45 Inc. VAT)
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Pre-order
Despatch: 8 to 10 Weeks
Model
SD300AB-4
Bar Code
DNA
Part Number
SD300AB-4
Brand
Albright
Colour
Black/Red
Voltage
48V DC
Amperage
300A
Material
Copper/Silver/Bakelite
Coil type
Continuous
Weight
850 g
 

 Pre-orders and back-ordering are available for all Albright brand out-of-stock items, with a current lead time of approximately 8 to 10 weeks despatch.

  • Ordering more Albright brand products than is shown in stock will put your order into a backorder process.
  • Request "Ship all available" in the order comments section if you order more units than are available.

 Telephone: +44 (0) 1924 823119 or Email us to discuss further requirements.


 Albright heavy-duty 48 Volts emergency battery disconnect switch with auxiliary and magnetic blowouts.

  • Rated 300A, 48Vdc with a continuous coil.
  • Single pole.
  • Internal fixing screws at 48mm centres.
  • Two M8 hex bolts for battery cable fixing.

Magnetic Blowouts

 These contactor switches are fitted with magnetic blowouts (denoted by 'B' suffix in the SD300B range) across contact gaps. These enable high currents to be ruptured very quickly so that arcing time is reduced to a minimum. Fitting of blowouts can make the contacts polarity sensitive and the positive markings on the cover of the contactor must be observed.

About The Albright SD300 Emergency Stop Switch

 The SD300 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 most small and medium-size electric vehicles.

 The SD300 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.

 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).

Specifications

Application Uninterrupted
Device Type SP On-Off with
Manual Disconnect
Coil Voltage 48Vdc
Coil Type Continuous
Thermal Current Rating (Ith) 300 Amps
Intermittent Current Rating 30% Duty 545A
40% Duty 475A
50% Duty 425A
60% Duty 385A
70% Duty 360A
Coil Resistance (Ohms) 150
Pull-In Voltage (V) 31.5 Max.
Drop Out Voltage (V) 12.0 Max.
Coil Power Dissipation (W) 15.36
Typical Voltage Drop Per Pole
Across New Contacts At 300A
30mV
Operating Ambient Temperature -40 to +60℃
Weight 850g

 


Delivery
 
UK Mainland Postage Offer

Delivery Options Our Free UK Mainland Postage and Packaging Service offers unbeatable value for money. The free UK Standard shipping is automatically applied to your shopping cart page with no additional cost when you reach the £50.00 minimum order value.

 We use Royal Mail Standard or Recorded Delivery for light, low-value orders and we use FedEx, UPS, Parcel Force, and other major courier services for larger and more valuable consignments.

 
International Consignments

 Our international customers will need to provide the exact Card Holder Address (Invoicee) as the first address for payment processing. Please note that PO Box addresses are not acceptable as delivery addresses by some couriers. All export orders must be placed and paid for online. Proforma Bank Transfer IBAN and SWIFT payment methods are available to create online.

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