SW181B-8 Albright 48V Single Pole Double Throw Solenoid Contactor - Continuous
Despatch: 6 to 8 Weeks
Part Number: SW181B-8
Voltage: 48V DC
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.
SW181B-8 single pole, double throw solenoid contactor 48 volt dc continuous.
- The SW181B-8 has been designed for 48V 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.
- 2180-43 Albright SW181 Series Contact Kit
- 2180-43A Albright SW181L Series Contact Kit - Large Tips
- 2180-796 Auxiliary Micro-Switch for Larger Albright SW Range Contactor Caps
- 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 Continuous (CO.) SW181B-4 Solenoids
Continuous contactors by design are predominantly for drive functions on vehicles, they have weaker coils, switch slightly slower than intermittent solenoids and are 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-8 SPDT Contactor|
|Typical Voltage Drop Per Pole|
across New Contacts at 150A
|Normally Open: 40mV|
|Coil Resistance (Ohms)||150|
|Pull In Voltage (V)||32.0 Maximum|
|Drop Out Voltage (V)||12.0 Maximum|
|Coil Power Dissipation (W)||15.36|
|Thermal Current Rating||150A||150A|
|Intermittent Current Rating:|
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