SW181B-1 Albright 12V Single Pole Double Throw Solenoid Contactor - Intermittent
Despatch: 6 to 8 weeks.
Part Number: SW181B-1
Voltage: 12V DC
Coil type: Intermittent
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.
SW181B-1 single pole, double throw solenoid contactor 12 volt dc intermittent.
- The SW181B-1 has been designed for 12V direct current (DC) loads, including motors as used on electric vehicles such as industrial trucks.
- Developed for both interrupted and uninterrupted loads, the SW181 is suitable for switching Resistive, Capacitive and Inductive loads.
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- 2159-47 Mounting Bracket.
- 2155-165 Mounting bracket.
- 2065-167A Mounting bracket.
These contactors are fitted with magnetic blowouts (denoted by 'B' suffix in the SW181B 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 top cover of the contactor must be observed.
About Intermittent (INT) SW181B-1 Solenoids
Intermittent contactors by design are predominantly used for hydraulic functions on vehicles, they make and break quicker than continuous solenoids and are not recommended for prolonged contact periods.
The SW181 has M8 stud main terminals and 6.3mm spade coil connections. It can be mounted via M5 tapped holes or mounting brackets purchased as separate items. Mounting can be horizontal or vertical, when vertical the M8 contact studs should point upwards. Please note Normally Closed contacts are not suited to make and break load.
|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). |
|Device Type ||SW181B-1 SPDT Contactor |
|Voltage ||12V D.C. |
|Coil Type ||Intermittent |
|Amps ||150 amp |
|Typical Voltage Drop Per Pole |
across New Contacts at 150A
|Normally Open: 40mV |
|Coil Resistance (Ohms) ||5 |
|Pull In Voltage (V) ||7.5 Maximum |
|Drop Out Voltage (V) ||3.0 Maximum |
|Coil Power Dissipation (W) ||28.80 |
|Application ||Interrupted ||Uninterrupted |
|Thermal Current Rating ||150A ||150A |
|Intermittent Current Rating: |
|30% Duty ||275A ||275A |
|40% Duty ||235A ||235A |
|50% Duty ||210A ||210A |
|60% Duty ||195A ||195A |
|70% Duty ||180A ||180A |
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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