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US10D1020A IMO 10kA UL1077 MCB 1 pole 20A D Curve
£8.43
Why Choose the IMO US10D1020A Miniature Circuit Breaker?
The IMO US10D1020A is a compact 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 circuit breaker combines reliable thermo-magnetic protection with a space-saving DIN rail mounted design, making it ideal for demanding industrial environments.
Designed for machine builders, panel manufacturers and automation engineers, the US10D1020A integrates seamlessly into industrial electrical enclosures alongside PLCs, relays, contactors and power supplies. Its compact modular construction helps maximise valuable enclosure space whilst delivering dependable supplementary circuit protection.
Featuring a 20 A rated current, a D Curve tripping characteristic and a 10 kA short-circuit breaking capacity, the IMO US10D1020A is particularly suitable for transformers, solenoids, contactor coils and other inductive loads that generate high inrush currents during start-up.
Key Advantages
- Compact UL1077 supplementary miniature circuit breaker.
- 20 A rated current for industrial control circuits.
- D Curve tripping characteristic for inductive, high-inrush loads.
- 10 kA short-circuit breaking capacity.
- Single-pole design saves valuable panel space.
- Fast DIN rail installation and simple maintenance.
Key Features
- IMO Precision Controls US10D Series.
- Single-pole configuration.
- 20 A rated operational current.
- D Curve magnetic trip characteristic.
- 10 kA interrupting capacity.
- UL1077 supplementary protector.
- Thermo-magnetic overload and short-circuit protection.
- Contact position indicator.
- Compact DIN rail mounted construction.
Reliable Protection for Industrial Automation
The IMO US10D1020A automatically disconnects the protected circuit during overload or short-circuit conditions, helping protect wiring, electrical equipment and connected machinery from damage. Its dependable thermo-magnetic operating mechanism contributes to increased equipment reliability and reduced production downtime.
Its D Curve characteristic is engineered for circuits with higher instantaneous start-up currents, making it particularly suitable for transformer-fed circuits, industrial power supplies, contactor coils, solenoids and similar inductive applications where nuisance tripping must be minimised.
Typical Applications
- Industrial control panels.
- OEM machinery.
- Factory automation systems.
- Transformer protection.
- Contactor and relay circuits.
- Industrial power supplies.
- PLC control systems.
- Instrumentation and process control equipment.
Technical Specifications
Tick the specs you need, then view products that match.
| Certification | UL 1077 | |
|---|---|---|
| Current | 20 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 | US10D1020A | |
| Product type | Supplementary miniature circuit breaker | |
| Rated current | 20 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 | |
| Wire capacity | AWG 18–3 (0.82–26.7 mm²) | |
| Approximate weight | 0.125 kg | |
| Manufacturer part number | US10D1020A | |
| Barcode | 5056207440496 | |
| HS Code | 8536201090 | |
| Country of Manufacture | India |
Frequently Asked Questions
What is the IMO US10D1020A used for?
It provides supplementary overload and short-circuit protection for industrial control circuits, machinery and factory automation equipment.
What is the rated current?
The IMO US10D1020A has a rated current of 20 A.
Why choose a D Curve circuit breaker?
D Curve breakers are intended for circuits with high inrush currents, making them ideal for transformers, solenoids, contactor coils and similar inductive equipment.
What is the breaking capacity?
The US10D1020A provides a 10 kA short-circuit breaking capacity.
Is this a UL489 branch circuit breaker?
No. The US10D1020A 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 reliable industrial electrical protection.
