About Continuous - CO - SU80 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 SU80P is an up-rated version of the SW80P designed for Interrupted and Uninterrupted applications. It is sealed to IP66 and has been designed for direct current loads in more arduous environments. It is suitable for switching Resistive, Capacitive and Inductive loads. Typical applications include, but are not limited to, electric motors, hydraulic power packs, winches and speed controllers. The SU80P features single pole double breaking main contacts with silver alloy tips, which are weld resistant, hardwearing and have excellent conductivity. The SU80P features an enclosed top cover and offers environmental protection to IP66. It has M8 stud main terminals and 6.3mm spade coil connections. Mounting can be vertical or horizontal, when vertical the M8 contact studs should point upwards.
About Continuous - CO.) SU80 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 SU80P is an up-rated version of the SW80P designed for Interrupted and Uninterrupted applications. It is sealed to IP66 and has been designed for direct current loads in more arduous environments. It is suitable for switching Resistive, Capacitive and Inductive loads. Typical applications include, but are not limited to, electric motors, hydraulic power packs, winches and speed controllers.
The SU80P features single pole double breaking main contacts with silver alloy tips, which are weld resistant, hardwearing and have excellent conductivity. The SU80P features an enclosed top cover and offers environmental protection to IP66. It has M8 stud main terminals and 6.3mm spade coil connections. Mounting can be vertical or horizontal, when vertical the M8 contact studs should point upwards.
About Intermittent - Int SU80-52117P
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 SU80P is an up-rated version of the SW80P designed for Interrupted and Uninterrupted applications. It is sealed to IP66 and has been designed for direct current loads in more arduous environments. It is suitable for switching Resistive, Capacitive and Inductive loads. Typical applications include, but are not limited to, electric motors, hydraulic power packs, winches and speed controllers.
The SU80P features single pole double breaking main contacts with silver alloy tips, which are weld resistant, hardwearing and have excellent conductivity. The SU80P features an enclosed top cover and offers environmental protection to IP66. It has M8 stud main terminals and 6.3mm spade coil connections. Mounting can be vertical or horizontal, when vertical the M8 contact studs should point upwards.
SW180-448L 24V Intermittent, 150 Amp
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 SW180 has been designed for direct current loads, including motors as used on electric vehicles such as industrial trucks. Developed for both interrupted and uninterrupted loads, the SW180 is suitable for switching Resistive, Capacitive, and Inductive loads.
The SW180 features single pole single throw, double breaking main contacts with silver alloy tips, which are weld resistant, hardwearing and have excellent conductivity. The SW180 has M8 stud main terminals and 6.3mm spade coil connections. It can be mounted via M5 tapped holes or steel mounting brackets - supplied as separate items). Mounting can be horizontal or vertical, when vertical the M8 contact studs should point upwards.
Albright SW180-4 – 24V DC Continuous (CO) Solenoid Contactor, SPST-NO
The Albright SW180-4 is a heavy‑duty DC contactor designed for reliable switching of motors and other DC loads. This single‑acting, single‑pole, normally‑open contactor features silver‑alloy double‑breaking tips for long life and low resistance, with a 24VDC continuous (100% duty) coil.
Key Features
Series: SW180 (single-acting)
Coil: 24 VDC, Continuous (100% duty)
Configuration: SPST, Normally Open (N/O)
Main terminals: M8 studs
Coil terminals: 6.3 mm spade connectors
Mounting: M5 tapped holes or optional steel bracket
Orientation: Horizontal or vertical (studs up recommended)
Typical applications: Forklifts, pallet movers, scissor lifts, tow tugs, golf carts, winches, EV conversions, industrial DC systems
Ratings & Performance
Thermal current (Ith)
150 A
Application rating
Interrupted: 150 A | Uninterrupted: 200 A
Typical voltage drop @150 A
~30 mV (per pole)
Breaking capacity (UL583 guide)
Up to 1000 A (48 V DC) for SW180
Operating temperature
-40 °C to +60 °C
Mechanical durability
> 5 million operations
Coil pull-in (typ.)
≤ 66% of rated coil voltage (continuous type)
Drop-out (typ.)
10–25% of rated coil voltage
Weight (approx.)
~0.64 kg
What’s Included
1 × Albright SW180-4 contactor (24V DC, continuous)
Note: Mounting bracket and auxiliary contacts, if required, are sold separately.
Dimensions
Compact footprint for easy panel or chassis mounting. See manufacturer datasheet for detailed dimensions and drilling pattern.
Compatibility & Use
Suitable for resistive, capacitive, and inductive DC loads
Common in OEM and aftermarket service for material handling and utility EVs
Check coil voltage (24 VDC) and current ratings against your application
Installation Notes
Use appropriately rated cable/busbar and protective devices
For vertical mounting, orient with M8 studs upward (contact us if studs-down is required)
Observe polarity if optional suppression or blowouts are used
SW180AB-48 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.
info: image of SW180A-48 which is exact same external look, this SW180AB-48 has B as extra = blowout magnets inside the top cover
The SW180AB has been designed for direct current loads, including motors as used on electric vehicles such as industrial trucks. Developed for both interrupted and uninterrupted loads, the SW180B is suitable for switching Resistive, Capacitive, and Inductive loads.
The SW180AB features single pole single throw, double-breaking main contacts with silver alloy tips, which are weld resistant, hardwearing, and have excellent conductivity. The SW180B has M8 stud main terminals and 6.3mm spade coil connections. It can be mounted via M5 tapped holes or steel mounting brackets - supplied as separate items). Mounting can be horizontal or vertical, when vertical the M8 contact studs should point upwards.
SW180AB-51 is an 48 volt 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 SW180AB has been designed for direct current loads, including motors as used on electric vehicles such as industrial trucks. Developed for both interrupted and uninterrupted loads, the SW180B is suitable for switching Resistive, Capacitive and Inductive loads.
The SW180AB features single pole single throw, double-breaking main contacts with silver alloy tips, which are weld resistant, hardwearing and have excellent conductivity.
The SW180B has M8 stud main terminals and 6.3mm spade coil connections. It can be mounted via M5 tapped holes or steel mounting brackets - supplied as separate items). Mounting can be horizontal or vertical, when vertical the M8 contact studs should point upwards.
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 SW180AB has been designed for direct current loads, including motors as used on electric vehicles such as industrial trucks. Developed for both interrupted and uninterrupted loads, the SW180B is suitable for switching Resistive, Capacitive and Inductive loads.The SW180AB features single pole single throw, double-breaking main contacts with silver alloy tips, which are weld resistant, hardwearing and have excellent conductivity. The SW180B has M8 stud main terminals and 6.3mm spade coil connections. It can be mounted via M5 tapped holes or steel mounting brackets - supplied as separate items). Mounting can be horizontal or vertical, when vertical the M8 contact studs should point upwards.
Genuine SW180B-4 ALBRIGHT 24V 150A CO DC - COntactor. The SW180B-4, a SW180 series of contactor, equipped with magnetic blowouts - B) has been designed for direct current loads, including motors as used on electric vehicles such as industrial trucks. SW180
About Continuous - CO.) SW181-4 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).
About Continuous - CO.) SW181-8 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).
SW181A-48 ALBRIGHT 24V 150A CO DC - Contactor
The SW181A-48, a SW181 series of contactor with auxilary contacts (A) fitted, has been designed for direct current loads. This including motors on electric vehicles such as industrial trucks.
Magnetic Blowouts Fitted, option "B"
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 - SW181AB-48 Solenoid
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.
Difference between Interrupted and Uninterrupted
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).
