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B10U3-400AC IMO Circuit Breaker Under Trip. 400VAC, 0.35 to 0.70 Ue
IMO B10U3-400AC is a 400 V AC undervoltage trip with a 0.35–0.70 Ue operating range, designed for compatible IMO moulded case circuit breakers used in industrial electrical installations.
£23.53
Why Choose the IMO B10U3-400AC Undervoltage Trip?
The IMO B10U3-400AC is a 400 V AC undervoltage trip accessory designed for compatible IMO moulded case circuit breakers. It provides an automatic tripping function when the monitored supply voltage falls below the operating threshold, helping ensure that connected equipment does not remain energised under unsuitable undervoltage conditions.
Designed for integration with compatible IMO circuit breakers, the B10U3-400AC operates from a nominal 400 V AC supply. The undervoltage release is specified with an operating range of 0.35–0.70 Ue, allowing the circuit breaker mechanism to respond when supply voltage drops substantially below its rated operating level.
The B10U3-400AC is particularly useful in industrial distribution, machinery and control applications where loss or significant reduction of control voltage should cause the associated breaker to trip. Its dedicated accessory format allows compatible IMO circuit breakers to be equipped with undervoltage protection as part of the required electrical control and safety arrangement.
Key Advantages
- Purpose-designed undervoltage trip for compatible IMO circuit breakers.
- 400 V AC rated operating voltage.
- Undervoltage trip operating range of 0.35–0.70 Ue.
- Automatically initiates breaker tripping when voltage falls below the required operating level.
- Suitable for industrial electrical distribution and machinery applications.
- Provides a dedicated accessory solution for compatible IMO moulded case circuit breakers.
Key Features
- IMO circuit breaker accessory.
- Undervoltage trip / undervoltage release.
- Nominal operating voltage of 400 V AC.
- 0.35–0.70 Ue undervoltage trip range.
- Designed for compatible IMO moulded case circuit breakers.
- Provides automatic breaker operation following significant supply-voltage reduction.
- Suitable for industrial power distribution and machine-control installations.
- Designed as an internal circuit breaker accessory rather than a standalone protective device.
Undervoltage Protection for Industrial Circuit Breakers
An undervoltage release is used where a circuit breaker must respond automatically to a significant reduction or loss of its monitored supply voltage. When voltage falls below the release's operating threshold, the accessory acts on the circuit breaker mechanism so that the breaker opens rather than allowing the connected circuit to remain energised under the abnormal voltage condition.
The IMO B10U3-400AC provides this functionality for compatible IMO circuit breakers using a 400 V AC supply. Its 0.35–0.70 Ue undervoltage operating range makes it suitable for industrial installations where controlled breaker operation is required following substantial supply-voltage reduction.
Typical Applications
- Industrial electrical distribution panels.
- Machinery power distribution.
- Motor and equipment supply circuits.
- Manufacturing and production equipment.
- Factory automation systems.
- Industrial control panels.
- OEM electrical equipment.
- Compatible IMO moulded case circuit breaker installations requiring undervoltage tripping.
Technical Specifications
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| Voltage | 400 V | |
|---|---|---|
| Manufacturer | IMO Precision Controls | |
| Model | B10U3-400AC | |
| Product type | Circuit breaker undervoltage trip | |
| Accessory type | Undervoltage release | |
| Rated voltage | 400 V AC | |
| Undervoltage trip range | 0.35–0.70 Ue | |
| For use with | Compatible IMO moulded case circuit breakers | |
| Function | Automatic circuit breaker tripping under undervoltage conditions | |
| Application | Industrial electrical distribution, machinery and control systems |
Frequently Asked Questions
What is the IMO B10U3-400AC used for?
The IMO B10U3-400AC is a 400 V AC undervoltage trip used with compatible IMO moulded case circuit breakers to initiate breaker tripping when the monitored voltage falls below the required operating level.
What voltage is the IMO B10U3-400AC rated for?
The B10U3-400AC is designed for a nominal operating voltage of 400 V AC.
What is the undervoltage trip range of the IMO B10U3-400AC?
The B10U3-400AC is specified with an undervoltage trip operating range of 0.35–0.70 Ue.
Is the IMO B10U3-400AC a complete circuit breaker?
No. The B10U3-400AC is an undervoltage trip accessory intended for installation with a compatible IMO moulded case circuit breaker.
Where is the IMO B10U3-400AC typically used?
The B10U3-400AC is typically used in industrial distribution panels, machinery, manufacturing equipment and other electrical installations where a compatible circuit breaker must trip following a significant reduction or loss of supply voltage.
Industrial Circuit Protection Solutions from IMO
IMO circuit breaker accessories such as the B10U3-400AC provide additional control and protection functionality for compatible moulded case circuit breakers, supporting reliable undervoltage tripping in industrial electrical distribution and machinery applications.
