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SD250LB-9 Albright 48V Maximum Emergency Stop Switch with Lock

SD250LB-9 Albright 48V Maximum Emergency Stop Switch with Lock
SD250LB-9 Albright 48V Maximum Emergency Stop Switch with Lock
SD250LB-9 Albright 48V Maximum Emergency Stop Switch with Lock
£103.71 Excl. VAT
(£124.45 Inc. VAT)
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Pre-order
Despatch: 8 to 10 Weeks
Model
SD250LB-9
Bar Code
DNA
Part Number
SD250LB-9
Brand
Albright
Colour
Black/Red
Voltage
48V DC
Amperage
250A
Material
Copper/Silver/Bakelite
Coil type
Continuous
Weight
1.10 kg
 

 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 International 250A 48 Volts DC heavy-duty emergency battery disconnect switch with lock, magnetic blowouts and continuous coil.

  • 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 at 250 amps, 48Vdc maximum current.
  • 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 SD250LB-9 Emergency Stop Switch

 Typically used on 48 Volts DC systems as an emergency stop 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.

 This lockable version features a key, which is necessary for the knob to be moved from the “Off” position to the “On” position. Once in the “On” position, the key can be removed. Thereafter, the knob may be depressed to the “Off” position where it will automatically lock and remain locked until the key is used again to unlock it.

 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.

Uninterrupted Current: No or infrequent load switching requirements (maintains a lower contact resistance).

Magnetic Blowouts

 These contactor switches are fitted with magnetic blowouts (denoted by 'B' suffix in the SD250B 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.

Specifications

Application Uninterrupted
Device Type SP SD250 On-Off with Manual Disconnect
Coil Voltage (V) 48 DC
Coil Type Continuous
Coil Resistance (Ohms) 150.0
Pull-In Voltage (V) 32.00 Maximum
Drop Out Voltage (V) 12.00 Maximum
Coil Power Dissipation (W) 15.36
Thermal Current Rating (Ith) 250 Amps
Intermittent Current Rating 30% Duty 455A
40% Duty 395A
50% Duty 355A
60% Duty 325A
70% Duty 300A
Typical Voltage Drop Per Pole
Across New Contacts At 100A
Less than 30mV
Operating Ambient Temperature -40 to +60℃
Weight 970g

 


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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