Why Choose the IMO UB10D3003A Miniature Circuit Breaker?
The IMO UB10D3003A is a compact 3-pole miniature circuit breaker (MCB) designed to protect three-phase electrical circuits against overloads and short circuits. Part of the IMO UB10 circuit protection range, it is suitable for industrial control panels, machinery, automation equipment and commercial distribution systems requiring reliable low-current circuit protection.
Featuring a D curve tripping characteristic, the UB10D3003A can tolerate the temporary inrush currents generated by transformers, motors, solenoids and other inductive equipment. This helps reduce nuisance tripping during normal start-up while maintaining dependable disconnection during sustained overload or short-circuit conditions.
With a rated current of 3 A, a 3-pole configuration and a 10 kA breaking capacity, the UB10D3003A provides simultaneous protection and isolation across three conductors. Its DIN rail-mounted construction supports straightforward integration into distribution boards, switchboards and industrial control enclosures.
Key Advantages
- Reliable overload and short-circuit protection.
- 3 A rated current for low-current industrial circuits.
- D curve tripping characteristic suitable for equipment with high starting currents.
- 3-pole configuration for simultaneous three-phase protection and isolation.
- 10 kA breaking capacity for dependable fault-current interruption.
- Compact DIN rail-mounted design simplifies panel installation.
Key Features
- IMO UB10 series miniature circuit breaker.
- 3 A rated operational current.
- D curve instantaneous trip characteristic.
- Three-pole switching configuration.
- 10 kA short-circuit breaking capacity.
- Thermal protection against sustained overload currents.
- Magnetic protection against short-circuit faults.
- Compact construction for standard 35 mm DIN rail installation.
Reliable Protection for Three-Phase Industrial Circuits
Miniature circuit breakers automatically disconnect electrical circuits when excessive current is detected, helping protect conductors, components and connected equipment from damage. Thermal protection responds to sustained overload conditions, while magnetic protection provides rapid disconnection during short-circuit faults.
The D curve characteristic of the IMO UB10D3003A allows higher temporary inrush currents than more sensitive trip curves. This makes it suitable for inductive equipment such as control transformers, motors, contactor coils and solenoids that may draw a significant current surge when energised.
Typical Applications
- Industrial control panels.
- Three-phase control and auxiliary circuits.
- Control transformers and power supplies.
- Motor starter and contactor circuits.
- Solenoids, coils and other inductive loads.
- Industrial automation systems.
- OEM machinery and electrical enclosures.
