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UB10D1003A IMO 10kA UL489 MCB 1 pole 3A D Curve
£14.24
Why Choose the IMO UB10D1003A Miniature Circuit Breaker?
The IMO UB10D1003A is a compact UL 489 miniature circuit breaker (MCB) designed to protect industrial control circuits, machinery and electrical installations against overloads and short circuits. Part of the established IMO UB10 series, this single-pole circuit breaker provides dependable branch circuit protection for low-current electrical applications.
Featuring a D curve tripping characteristic, the UB10D1003A is suitable for circuits supplying transformers, power supplies, solenoids, contactors and other inductive equipment with high temporary inrush currents. Its thermo-magnetic operating mechanism provides reliable fault disconnection while helping to prevent nuisance tripping during normal equipment energisation.
With a 3 A rated current, a single-pole configuration and a 10 kA short-circuit breaking capacity, the IMO UB10D1003A is ideal for protecting control and auxiliary circuits. Its DIN rail mounted construction supports straightforward installation inside industrial control panels, electrical enclosures and machinery cabinets.
Key Advantages
- Dependable overload and short-circuit protection for industrial electrical circuits.
- 3 A rated current suitable for control, auxiliary and equipment supply circuits.
- Single-pole configuration for individual branch circuit protection.
- D curve tripping characteristic accommodates high temporary inrush currents.
- 10 kA breaking capacity provides reliable short-circuit interruption.
- Compact DIN rail mounting simplifies installation and replacement.
Key Features
- IMO UB10 miniature circuit breaker series.
- 3 A rated operational current.
- Single-pole (1P) configuration.
- D curve operating characteristic.
- 10 kA rated short-circuit breaking capacity.
- Thermo-magnetic overcurrent protection.
- Contact position indicator.
- UL 489, IEC 60947-2 and IEC 60898-1 compliant.
- DIN rail mountable and RoHS compliant.
Reliable Protection for High-Inrush Control Circuits
Miniature circuit breakers automatically disconnect a circuit when an overload or short circuit occurs, helping to protect conductors, machinery and connected components from electrical damage. This supports safer operation, reduces the possibility of prolonged equipment faults and simplifies circuit restoration after the cause of a trip has been corrected.
The D curve response of the IMO UB10D1003A permits temporary current peaks of approximately 10 to 20 times its rated current before instantaneous magnetic tripping. This makes it particularly suitable for correctly designed circuits containing equipment with substantial start-up or energisation currents.
Typical Applications
- Industrial control and auxiliary circuits.
- Control transformers and power supplies.
- Solenoid and contactor circuits.
- PLC and factory automation panels.
- OEM machinery and production equipment.
- Electrical cabinets and distribution enclosures.
Technical Specifications
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| Certification | UL 489 | |
|---|---|---|
| Current | 3 A | |
| Phase | Single Phase | |
| Poles | 1-pole | |
| Device Type | MCB | |
| Trip Curve | D curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | IMO Precision Controls | |
| Series | UB10 | |
| Model | UB10D1003A | |
| Product type | Miniature circuit breaker | |
| Rated operational current | 3 A | |
| Number of poles | 1 | |
| Tripping curve | D curve, 10–20 × rated current | |
| Rated short-circuit breaking capacity | 10 kA | |
| UL AC rated operational voltage | 277 V AC | |
| IEC AC rated operational voltage | 230 V AC | |
| DC rated operational voltage | 48 V DC | |
| Rated frequency | 50/60 Hz | |
| Mechanical lifetime | 20,000 operations | |
| Electrical lifetime | 6,000 operations | |
| Calibration temperature | 40°C | |
| Operating temperature | -25°C to +55°C | |
| Protection degree | IP20 / NEMA 1 | |
| Pollution degree | 3 | |
| Wire range | AWG 18–3 / 0.82–26.7 mm² | |
| Fastening torque | 2.5 Nm | |
| Mounting type | DIN rail to EN 60715 | |
| Approximate dimensions (H × W × D) | 108 × 17.5 × 61 mm | |
| Approximate weight | 0.125 kg | |
| Standards | UL 489, IEC 60947-2 and IEC 60898-1 | |
| HS Code | 8536201090 | |
| Country of Manufacture | India |
Frequently Asked Questions
What is the IMO UB10D1003A used for?
It is used to protect 3 A industrial control, auxiliary and equipment circuits against overloads and short circuits.
What is the current rating of the UB10D1003A?
The IMO UB10D1003A has a rated operational current of 3 A.
What does the D curve characteristic mean?
The D curve instantaneous trip range is approximately 10 to 20 times the breaker's rated current, making it suitable for correctly designed circuits with high temporary inrush currents.
What is the short-circuit breaking capacity?
The UB10D1003A has a rated short-circuit breaking capacity of 10 kA.
Which voltage ratings does this circuit breaker support?
Its rated operational voltages include 277 V AC under UL, 230 V AC under IEC and 48 V DC for a single-pole installation.
How is the IMO UB10D1003A installed?
It is designed for mounting on a standard DIN rail inside an appropriate electrical control panel or enclosure.
Trusted by Industrial Panel Builders
IMO circuit protection products provide electrical engineers, automation specialists and OEM machine builders with dependable solutions for protecting industrial control circuits, machinery and electrical installations.
