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 are available with a 6 to 8 week lead time. Telephone: +44 (0) 1924 823119 or Email us to discuss further requirements. |
SU280B-1283 single-acting, 72 to 80 volts dc 250 amp continuous solenoid contactor with magnetic blowouts fitted.
- 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, hard wearing and have excellent conductivity.
- Auxiliary switch kit part number: 2155-352.
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 '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. 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, hard wearing 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 - opening and closing on load with frequent switching (results in increased contact resistance). |
| Uninterrupted current - no or infrequent load switching requirements (maintains a lower contact resistance). |
Specifications
| Device Type | SU280B SPST NO |
| Voltage | 72-80V D.C. |
| Coil Type | Continuous |
| Amps | 250 amp |
| 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  Free UK Mainland delivery discount is selectable on your shopping cart page; a £50.00 minimum order value is applicable for the Free Delivery Service, with a variable low Standard Rate shipping charge for smaller consignments.
Despatch methods for Standard and Free UK Delivery Service include light, low-value orders despatched via Royal Mail standard or recorded delivery, with large and high-value orders despatched via UPS and Parcel Force courier services.
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International Consignments International orders and consignments require the exact Card Holder Address (Invoicee) as the first address for payment processing. PO Box addresses are not acceptable as delivery addresses by some couriers.
Export orders will only be accepted when placed online. |
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