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UB10D1008A IMO 10kA UL489 MCB 1 pole 8A D Curve
£14.24
Why Choose the IMO UB10D1008A Miniature Circuit Breaker?
The IMO UB10D1008A 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 industrial and commercial electrical applications.
Featuring a D curve tripping characteristic, the UB10D1008A is suitable for circuits supplying transformers, industrial power supplies, solenoids, contactors and other inductive equipment that can produce substantial temporary inrush currents. Its thermo-magnetic operating mechanism provides reliable fault disconnection whilst helping to reduce nuisance tripping during normal equipment energisation.
With an 8 A rated operational current, a single-pole configuration and a 10 kA short-circuit breaking capacity, the IMO UB10D1008A is well suited to control, auxiliary and equipment supply circuits. Its compact DIN rail mounted construction supports straightforward installation inside industrial control panels, machinery cabinets and electrical enclosures.
Key Advantages
- Dependable overload and short-circuit protection for industrial electrical circuits.
- 8 A rated operational current for control, auxiliary and equipment supply applications.
- Single-pole configuration provides individual branch circuit protection.
- D curve tripping characteristic accommodates high temporary inrush currents.
- 10 kA breaking capacity provides robust short-circuit interruption.
- Compact DIN rail mounting simplifies panel installation, servicing and replacement.
Key Features
- IMO UB10 miniature circuit breaker series.
- 8 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 for convenient status checking.
- Suitable for branch circuit device protection.
- 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 electrical circuits when overload or short-circuit conditions occur. This helps protect conductors, control components and connected equipment from electrical damage whilst supporting safer operation, reducing downtime and simplifying circuit restoration after a fault has been corrected.
The D curve response of the IMO UB10D1008A allows correctly designed circuits to tolerate brief start-up currents of approximately 10 to 20 times the breaker's rated current before instantaneous magnetic tripping occurs. This makes it particularly suitable for inductive loads and other equipment that experiences substantial current surges during energisation.
Typical Applications
- Industrial control and auxiliary circuits.
- Control transformers and industrial power supplies.
- Solenoid, relay 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 | 8 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 | UB10D1008A | |
| Product type | Miniature circuit breaker | |
| Rated operational current | 8 A | |
| Number of poles | 1 | |
| Tripping characteristic | D curve | |
| Instantaneous trip range | 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 operational frequency | 50/60 Hz | |
| Operating mechanism | Thermo-magnetic | |
| Calibration temperature | 40°C | |
| Operating temperature | -25°C to +55°C | |
| Mechanical lifetime | 20,000 operations | |
| Electrical lifetime | 6,000 operations | |
| 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 weight | 0.125 kg | |
| Applicable standards | UL 489, IEC 60947-2 and IEC 60898-1 | |
| HS Code | 8536201090 | |
| Country of Manufacture | India |
Frequently Asked Questions
What is the IMO UB10D1008A used for?
It is used to protect 8 A industrial control, auxiliary and equipment circuits against overloads and short circuits.
What is the current rating of the UB10D1008A?
The IMO UB10D1008A has a rated operational current of 8 A.
What does the D curve characteristic mean?
A D curve circuit breaker has an instantaneous magnetic trip range of approximately 10 to 20 times its rated current, making it suitable for correctly designed circuits with high temporary inrush currents.
What is the short-circuit breaking capacity?
The UB10D1008A 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.
Which types of load can this circuit breaker protect?
It can be used in appropriately designed circuits supplying transformers, industrial power supplies, contactors, solenoids and other equipment with high energisation currents.
How is the IMO UB10D1008A installed?
It is designed for mounting on a standard DIN rail inside a suitable industrial control panel, machinery cabinet or electrical 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.
