SU280B-1283 Albright Single 72V-80V 250A Contactor - Continuous - Blowouts
Weight: 800 g
Model: SU280B-1283
Bar Code: DNA
Part Number: SU280B-1283
Brand: Albright
Colour Black
Voltage 72-80V DC
Amperage 250A
Material Copper/Silver/Bakelite/Steel
Coil type Continuous
| Pre-order and back-ordering is available with a current 9 to 12 weeks despatch. Telephone: +44 (0) 1924 823119 or Email us to discuss further requirements. |
SU280B-1283 single-acting, 72 to 80 Volts DC 250 Amps solenoid contactor with magnetic blowouts fitted, continuous.
- The SU280B series of contactors has been designed for direct current loads, particularly motors as used on small electric vehicles such as industrial trucks, airport tractors, etc., they have double-breaking contacts with Silver-alloy contact tips, which are weld resistant, hardwearing and have excellent conductivity.
Associated Products
- 2156-184 Contact kit
- 2155-352 Auxiliary switch kit.
- 2159-47 Mounting bracket.
- 2155-165 Mounting bracket.
- 2159-167A Mounting bracket.
Dimensions
- Height including terminals and coil base cap: 132mm.
- Coil width: 45mm.
- Cap width: 67mm.
- Cap depth: 47mm.
Magnetic Blowouts
These contactors are of double break configuration and are fitted with magnetic blowouts (denoted by the 'B' suffix in the SU280B range) across both contact gaps. These enable high currents to be ruptured very quickly so that arcing time is reduced to a minimum. The fitting of blowouts makes the contacts polarity sensitive and the Positive markings on the top cover of the contactor must be observed.
About Continuous (CO.) SU280B Solenoids
Continuous contactors by design are predominantly used for drive functions on vehicles, they make and break slower than intermittent solenoids and are recommended for prolonged contact periods.
The contactors have double-breaking main contacts with Silver-alloy tips, which are weld resistant, hardwearing and have excellent conductivity. They are easy to install, with M5 tapped holes in the switch frame together with a range of available mounting brackets. Mounting can be vertical or horizontal, when vertical the M10 contact studs should point upwards.
| Interrupted Current: The opening and closing on load with frequent switching (resulting in increased contact resistance). |
| Uninterrupted Current: No or infrequent load switching requirements (maintains a lower contact resistance). |
Specifications
| Device Type | SPST NO |
| Voltage | 72-80V D.C. |
| Coil Type | Continuous |
| Amps | 250 Amps |
| Coil Power Dissipation | 10 - 15 Watts |
| Typical Pull-In Time | 30ms |
Typical Voltage Drop Per Pole
Across New Contacts At 100A | 40mV |
| Operating Ambient Temperature | -40 to +60℃ |
| Weight | 805g |
| Application | Interrupted | Uninterrupted |
| Thermal Current Rating | 250A | 350A |
| Intermittent Current Rating: |
| 30% Duty | 450A | 640A |
| 40% Duty | 395A | 555A |
| 50% Duty | 355A | 495A |
| 60% Duty | 325A | 450A |
| 70% Duty | 300A | 420A |
Free UK Mainland Postage and Packaging  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 UPS, Parcel Force, and other major courier services for larger and more valuable consignments.
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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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