SU280B-1439 Albright Single-acting 54V 250A Contactor - Continuous - Blowouts
£65.64 Excl. VAT (£78.77 Inc. VAT)
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Despatch: 9 to 12 Weeks
Weight: 800 g
Bar Code: DNA
Part Number: SU280B-1439
Voltage 54V DC
Coil type Continuous
Pre-order and back-ordering is available for all Albright out-of-stock items, with a current 9 to 12 weeks despatch.
Telephone: +44 (0) 1924 823119 or Email us to discuss further requirements.
SU280B-1439 single-acting, 54 Volts DC 250 Amps 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, hardwearing and have excellent conductivity.
- 2156-184 Contact kit
- 2155-352 Auxiliary switch kit.
- 2159-47 Mounting bracket.
- 2155-165 Mounting bracket.
- 2159-167A Mounting bracket.
- Height, including terminals and coil base cap: 132mm.
- Coil width: 45mm.
- Cap width: 67mm.
- Cap depth: 47mm.
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). |
|Device Type ||NO - SP - ST |
|Voltage ||54V D.C. |
|Coil Type ||Continuous |
|Amps ||250 Amps |
|Coil Resistance (Ohms) ||240 |
|Pull-In Voltage (V) ||36.0 Max. |
|Drop Out Voltage (V) ||13.5 Max. |
|Coil Power Dissipation (W) ||12.15 |
|Typical Pull-In Time ||30ms |
|Typical Voltage Drop Per Pole |
Across New Contacts At 100A
|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 |
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