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1SBN040200R1012 ABB WA4-96-12 Mechanical Interlock Auxiliary Contact Accessory 9NO 6NC
ABB WA4-96-12 mechanical latching unit for AF80 and AF96 contactors designed to maintain contactor operation without continuous coil energisation.
£37.37
Why Choose the ABB WA4-96-12 Mechanical Latching Unit?
The ABB WA4-96-12 is a reliable mechanical latching unit designed for ABB AF80 and AF96 contactors, allowing standard contactors to be converted into compact latched contactors. As part of the ABB AF contactor accessory range, it provides secure mechanical holding of the contactor position even when the coil supply voltage is removed or fails.
This mechanical latch uses an electromagnetic impulse unlatching system operated by AC or DC control signals, with manual release available through the front pushbutton. The design allows energy-saving applications where the contactor must remain switched on without continuous coil energisation.
With a 48–130 V AC/DC control voltage range and compatibility with ABB AF80 and AF96 contactors, the WA4-96-12 is ideal for industrial motor control panels, automation systems and electrical installations requiring maintained contactor operation.
Key Advantages
- Reliable mechanical latching accessory for ABB AF contactors.
- Maintains contactor position during coil voltage failure.
- 48–130 V AC/DC impulse control range for flexible installation.
- Reduces energy consumption by eliminating continuous coil energisation.
- Allows standard contactors to be converted into compact latched contactors.
- Supports manual and electrical unlatching methods.
Key Features
- ABB WA4-96 mechanical latching unit series.
- WA4-96-12 model.
- Mechanical locking accessory for AF80 and AF96 contactors.
- 48–130 V AC 50/60 Hz and DC operation.
- Electromagnetic impulse unlatching function.
- Manual front pushbutton release.
- Front mounting design on compatible ABB contactors.
- Compatible with CA4 and CAL4 auxiliary contact accessories.
Reliable Contactor Holding for Industrial Systems
Mechanical latching units such as the ABB WA4-96-12 provide a dependable method of maintaining contactor operation without continuous coil power. This makes them suitable for applications where energy efficiency, operational continuity and reliable switching control are important.
The ABB WA4 accessory range enables engineers to create compact latched contactor solutions while maintaining compatibility with established AF series contactor systems and auxiliary accessories.
Typical Applications
- Industrial motor control panels.
- Energy-saving contactor control systems.
- Automation and machine control equipment.
- Industrial switching assemblies.
- OEM electrical control systems.
- Applications requiring maintained contactor operation after power interruption.
Technical Specifications
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| Terminal Type | Screw | |
|---|---|---|
| Coil Type | AC, AC/DC, DC | |
| Coil Voltage Range | 100–130 V, 42–48 V, 60–72 V | |
| Coil / Supply Voltage | 110 V AC, 110 V DC, 115 V AC, 120 V AC, 125 V DC, 48 V AC, 48 V DC, 60 V DC, 72 V DC | |
| Device Type | Accessory | |
| Manufacturer | ABB | |
| Series | WA4 Mechanical Latching Units | |
| Model | WA4-96-12 | |
| Product ID | 1SBN040200R1012 | |
| Product type | Mechanical latching unit | |
| Accessory type | Mechanical locking accessory | |
| Suitable for | AF80 and AF96 contactors | |
| Control voltage | 48–130 V AC/DC | |
| Frequency | 50 / 60 Hz | |
| Unlatching method | Electrical impulse or manual release | |
| Mounting type | Front mounting | |
| Terminal type | Screw terminals | |
| Weight | approx. 0.08 kg |
Frequently Asked Questions
What is the ABB WA4-96-12 used for?
This mechanical latching unit is used to keep compatible ABB contactors switched on without continuous coil energisation.
Which ABB contactors are compatible with the WA4-96-12?
The WA4-96-12 is designed for use with ABB AF80 and AF96 contactors.
What control voltage does the WA4-96-12 require?
The unit operates with a 48–130 V AC/DC control voltage range.
How is the contactor released after latching?
The contactor can be released electrically using an impulse signal or manually using the front pushbutton on the latching unit.
Where is this product typically installed?
The WA4-96-12 is typically installed on ABB AF series contactors inside industrial control panels and automation systems.
Trusted by Automation Engineers Worldwide
ABB contactor accessories are widely used by electrical engineers and machine builders to create reliable, energy-efficient and flexible industrial control solutions.
