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US10D1050A IMO 10kA UL1077 MCB 1 pole 50A D Curve
£8.43
Why Choose the IMO US10D1050A Miniature Circuit Breaker?
The IMO US10D1050A is a high-performance UL1077 supplementary miniature circuit breaker (MCB) designed to provide dependable overload and short-circuit protection for industrial control panels, OEM machinery and factory automation systems. Manufactured by IMO Precision Controls, this single-pole breaker combines reliable thermo-magnetic protection with a compact DIN rail mounted design, making it ideal for demanding industrial applications.
Designed for machine builders, panel builders and automation engineers, the US10D1050A integrates seamlessly with PLCs, relays, contactors, industrial power supplies and other control equipment. Its compact modular construction helps maximise enclosure space whilst delivering dependable supplementary circuit protection.
Featuring a 50 A rated current, a D Curve tripping characteristic and a 10 kA short-circuit breaking capacity, the IMO US10D1050A is particularly suitable for transformers, solenoids, contactor coils and other inductive loads that generate high inrush currents during energisation.
Key Advantages
- Compact UL1077 supplementary miniature circuit breaker.
- 50 A rated current for industrial control applications.
- D Curve characteristic for high inrush current loads.
- 10 kA short-circuit breaking capacity.
- Single-pole construction saves valuable DIN rail space.
- Thermo-magnetic protection against overloads and short circuits.
- Fast DIN rail installation for new and retrofit control panels.
Key Features
- IMO Precision Controls US10D Series.
- Single-pole configuration.
- 50 A rated operational current.
- D Curve magnetic trip characteristic.
- 10 kA interrupting capacity.
- UL1077 supplementary protector.
- Thermo-magnetic operating mechanism.
- Positive contact position indicator.
- Compact EN 60715 DIN rail mounted design.
Reliable Protection for Industrial Automation
The IMO US10D1050A automatically disconnects circuits experiencing overload or short-circuit conditions, helping to protect electrical conductors, machinery and sensitive industrial equipment from damage. Its dependable thermo-magnetic operating mechanism contributes to improved reliability and reduced production downtime.
The D Curve characteristic is specifically intended for circuits with high instantaneous starting currents. This makes the breaker an excellent choice for transformer-fed circuits, industrial power supplies, solenoids, contactor coils and other inductive equipment where nuisance tripping must be minimised.
Typical Applications
- Industrial control panels.
- OEM machinery.
- Factory automation systems.
- Transformer protection.
- Industrial power supplies.
- Contactor and relay circuits.
- PLC control systems.
- Material handling and process control equipment.
- Packaging machinery.
Technical Specifications
Tick the specs you need, then view products that match.
| Certification | UL 1077 | |
|---|---|---|
| Current | 50 A | |
| Phase | Single Phase | |
| Poles | 1-pole | |
| Device Type | MCB | |
| Trip Curve | D curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | IMO Precision Controls | |
| Series | US10D | |
| Model | US10D1050A | |
| Product type | Supplementary miniature circuit breaker | |
| Rated current | 50 A | |
| Number of poles | 1 | |
| Trip characteristic | D Curve (10–20 × In) | |
| Breaking capacity | 10 kA | |
| Standards | UL1077, IEC 60947-2 & IEC 60898-1 | |
| UL rated operational voltage | 277 V AC | |
| IEC rated operational voltage | 230 V AC | |
| DC rated operational voltage | 48 V DC | |
| Frequency | 50 / 60 Hz | |
| Protection rating | IP20 / NEMA 1 | |
| Mounting | EN 60715 DIN rail | |
| Operating temperature | -25°C to +55°C | |
| Mechanical life | 20,000 operations | |
| Electrical life | 6,000 operations | |
| Terminal tightening torque | 2.5 Nm | |
| Conductor capacity | AWG 18–3 (0.82–26.7 mm²) | |
| Manufacturer part number | US10D1050A | |
| Barcode | 5056207471209 | |
| HS Code | 8536201090 | |
| Country of Manufacture | India |
Frequently Asked Questions
What is the IMO US10D1050A used for?
It provides supplementary overload and short-circuit protection for industrial control systems, machinery and factory automation equipment.
What is the rated current?
The IMO US10D1050A has a rated current of 50 A.
Why choose a D Curve circuit breaker?
D Curve breakers are designed for inductive loads with high inrush currents, including transformers, industrial power supplies, solenoids and contactor coils.
What is the interrupting capacity?
The US10D1050A provides a 10 kA short-circuit breaking capacity.
Is this a UL489 branch circuit breaker?
No. The US10D1050A is a UL1077 supplementary protector intended for supplementary protection within industrial equipment and control systems.
How is the breaker installed?
The breaker clips directly onto a standard EN 60715 DIN rail inside industrial control panels and electrical enclosures.
Trusted by Industrial Professionals
IMO Precision Controls supplementary circuit breakers are trusted worldwide by OEM manufacturers, panel builders and automation engineers for compact, dependable protection of industrial electrical control systems.
