Albright DC182B-733 – 48V DC Motor Reversing Contactor with Magnetic Blowouts
The DC182B-733 is a high-performance motor reversing contactor designed for demanding DC applications, including electric vehicles, materials handling equipment, and industrial machinery. As part of Albright’s trusted DC182 series, this compact contactor is engineered for safe, efficient, and reliable bidirectional motor control.
Featuring magnetic blowouts for enhanced arc suppression, the DC182B-733 delivers superior performance in high-current environments. Its robust single-pole, double-throw (SPDT) design ensures long service life, mechanical reliability, and protection against simultaneous coil energization.
Key Features
Rated Voltage: 48V DC
Continuous Current: 150A (up to 275A intermittent)
Magnetic Blowouts: Fitted for safe, high-current switching
Contact Configuration: Monoblock reversing, failsafe design
Durability: Over 5 million mechanical cycles
Mounting: Compact with universal bracket, M8 terminals
Typical Applications: Forklifts, electric vehicles, winches, industrial trucks
Benefits
Reliable Reversing: Prevents contact damage from misoperation
Arc Suppression: Extends contact life under load
Compact & Serviceable: Easily integrates into DC systems
Custom Coil Options: Available in multiple voltages (24V, 36V, 80V, etc.)
The Albright DC182B-733 is the ideal choice for reversing motor control in DC circuits requiring consistent performance, compact design, and long operating life.
Reliable Power Switching in Harsh Environments
The Albright SU80-5163PL is a heavy-duty DC contactor engineered for continuous duty applications up to 150A at 28V DC. This single-acting model is part of Albright’s trusted SU80 series, known for robust construction and long operational life.
Designed with an IP66 rated sealed housing, this contactor provides exceptional protection against water, dust, and other environmental hazards—making it ideal for use in material handling, electric vehicles, marine systems, and industrial automation.
Key Features:
Voltage: 28V DC
Current: 150A Continuous
Type: Single-acting (normally open)
Protection Rating: IP66 (fully sealed)
Coil Terminals: Plated for corrosion resistance
Compact footprint, easy to install
Applications:
Perfect for mobile equipment, battery-powered systems, off-road vehicles, and any harsh environment where reliability is critical.
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
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.
SW180-954L Albright 150A 12V INT 1-pole 1-throw Contactor
SW180-954L, a SW180L series of contactors, equipped with magnetic blowouts - B and larger contact tips (L) and has been designed for direct current loads, including motors as used on electric vehicles such as industrial trucks
SW180B-1248L Albright 150A 12V INT 1-pole 1-throw Contactor
SW180B-1248L, a SW180L series of contactors, equipped with magnetic blowouts - B and larger contact tips (L) and has been designed for direct current loads, including motors as used on electric vehicles such as industrial trucks
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 SW180B 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 SW180B 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
SW180B-448L Albright 150A 12V INT 1-pole 1-throw Contactor
SW180B-448L, a SW180L series of contactors, equipped with magnetic blowouts - B and larger contact tips (L) and has been designed for direct current loads, including motors as used on electric vehicles such as industrial trucks
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).
Albright SW181B-141 24V DC CO - Continuous
CO-type (Continuous) can be run always on
Magnetic Blowouts
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.
This SW181B-141 is also used in Haulotte machines under code 2440318890 - Contactor 24V Albright SW181B-141
Haulotte 2440318890 Contactor 24V, fits Haulotte HA15IP / HA43JE / HA12IP / HA33JE
About SW181B-141 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).
Magnetic Blowouts
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-241TSolenoids
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).
About the Continuous SW182B-4 Reversing Contactors Continuous contactors by design are predominantly for drive functions on vehicles; they make and break slower than intermittent solenoids, and are recommended for prolonged contact periods. The SW182B is a configuration of two 'Single Pole, Double Throw' type contactors on a common bracket for motor reversing. The SW182B features single-pole double-breaking main contacts with silver alloy tips, which are weld resistant, hardwearing and have excellent conductivity. The SW182B main contact circuit, designed for motor reversing, is such that it has a built-in failsafe, so that if both coils are energized simultaneously the contact arrangement is open circuits. The SW182B has M8 stud main terminals and 6.3mm spade coil connections. Mounted using the supplied bracket, mounting of the solenoids can be horizontal or vertical, when vertical the M8 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).
Magnetic Blowouts These contactors are fitted with magnetic blowouts - denoted by 'B' suffix in the SW182B 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.
DC182-3 Motor Reversing Solenoid
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 DC182 is a monoblock construction, resulting in a neat compact design which is compatible with modern electronic control systems. The DC182 is physically and electrically interchangeable with the SW182 reversing contactor but rewiring will be required.
This version of the DC182 has M8 stud main terminals and 6.3mm spade coil connections. Mounting is via the integral bracket formed into the coil housing case. Mounting can be horizontal or vertical, when vertical the M8 contact studs should point upwards.
DC182-490 Albright Motor Reversing Solenoid
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 DC182 is a monoblock construction, resulting in a neat compact design which is compatible with modern electronic control systems. The DC182 is physically and electrically interchangeable with the SW182 reversing contactor but rewiring will be required.
This version of the DC182 has M8 stud main terminals and flying lead coil energising connection. Mounting can be horizontal or vertical, when vertical the M8 contact studs should point upwards.
The DC182-490 Albright 150A 12V DC - INT Monoblock Motor Reversing Contactor is a specific type of electrical component used for controlling the direction of rotation of a DC motor. Let's break down what each part of the name refers to:
DC182-490: This likely refers to the model number or product code of the contactor. It's the identifier used by the manufacturer to distinguish this particular model from others they produce.
Albright: This is the brand name of the contactor. Albright is a well-known manufacturer of electrical contactors and other related components.
150A: This indicates the maximum current rating of the contactor, which in this case is 150 amperes. This denotes the maximum amount of current that the contactor is designed to handle safely.
12V DC: This specifies the voltage rating of the contactor. It's designed to operate with a DC (direct current) voltage of 12 volts.
INT: This could stand for "interruptible" or "intermittent," indicating that the contactor is suitable for applications where the current flow may be interrupted or varies periodically.
Monoblock Motor Reversing Contactor: This describes the type and function of the contactor. It's designed to control the direction of rotation of a motor, meaning it can reverse the polarity of the current flowing through the motor to change its direction.
The DC182-490 Albright 150A 12V DC - INT Monoblock Motor Reversing Contactor is a heavy-duty electrical component manufactured by Albright, capable of handling up to 150 amperes of direct current, specifically designed for controlling the direction of rotation of a motor in applications where interruptions or intermittent operations may occur.
