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US10C3003A IMO 10kA UL1077 MCB 3 pole 3A C Curve
£25.20
Why Choose the IMO US10C3003A UL1077 Miniature Circuit Breaker?
The IMO US10C3003A is a compact UL1077 supplementary miniature circuit breaker designed to provide dependable overcurrent protection for industrial control panels, OEM machinery and automation systems. Manufactured by IMO Precision Controls, this three-pole protective device helps safeguard electrical circuits against sustained overloads and short-circuit faults in demanding industrial environments.
Featuring a C curve tripping characteristic, the US10C3003A accommodates the moderate inrush currents commonly produced by transformers, contactors, motors and switched-mode power supplies. Its thermal-magnetic operating mechanism combines delayed overload protection with rapid short-circuit interruption, helping protect connected wiring and control equipment.
With a 3 A rated current, 3-pole configuration and 10 kA short-circuit breaking capacity, the IMO US10C3003A provides simultaneous protection and isolation across three conductors. Its modular DIN rail-mounted construction enables straightforward installation within machinery enclosures and industrial electrical cabinets.
Key Advantages
- Compact UL1077 supplementary circuit protector.
- 3 A rated current for low-current industrial circuits.
- 3-pole configuration for simultaneous three-phase protection and isolation.
- C curve tripping characteristic suitable for moderate inrush currents.
- 10 kA short-circuit breaking capacity.
- Quick and convenient DIN rail installation.
Key Features
- IMO Precision Controls US10 Series.
- UL1077 supplementary circuit protection.
- 3 A rated operational current.
- 3-pole construction.
- C curve operating characteristic.
- 10 kA rated breaking capacity.
- Thermal-magnetic overcurrent protection.
- Contact position indication.
- Compact DIN rail-mounted design.
Dependable Three-Pole Circuit Protection
The IMO US10C3003A automatically disconnects the protected circuit when excessive current is detected. Its thermal element responds to sustained overload conditions, while its magnetic trip mechanism rapidly interrupts higher-current short circuits. This dual-action operation helps reduce the risk of damage to wiring, control equipment and connected industrial components.
As a UL1077 supplementary protector, the US10C3003A is intended for installation within electrical equipment where suitable branch-circuit protection is already provided. Its low 3 A rating makes it particularly suitable for control, instrumentation and auxiliary circuits requiring linked three-pole disconnection.
Typical Applications
- Industrial control panels.
- Three-phase control and monitoring circuits.
- Instrumentation and measurement equipment.
- Transformer secondary protection.
- Control power supplies.
- OEM machinery and automation systems.
- Motor contactor and auxiliary circuits.
Technical Specifications
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| Certification | UL 1077 | |
|---|---|---|
| Current | 3 A | |
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | MCB | |
| Trip Curve | C curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | IMO Precision Controls | |
| Series | US10 | |
| Model | US10C3003A | |
| Product type | Supplementary miniature circuit breaker | |
| Rated current | 3 A | |
| Number of poles | 3 | |
| Trip characteristic | C Curve, 5–10 × rated current | |
| Short-circuit breaking capacity | 10 kA | |
| UL rated operational voltage | Up to 480Y/277 V AC | |
| IEC rated operational voltage | Up to 415 V AC | |
| Rated frequency | 50 / 60 Hz | |
| Operating mechanism | Thermal-magnetic | |
| Mechanical lifetime | 20,000 operations | |
| Electrical lifetime | 6,000 operations | |
| Operating temperature | -25°C to +55°C | |
| Fastening torque | 2.5 Nm | |
| Wire range | AWG 18–3 / 0.82–26.7 mm² | |
| Mounting | DIN rail EN 60715 | |
| Protection degree | NEMA 1 / IP20 | |
| Pollution degree | 3 | |
| Standards | UL1077, IEC 60947-2 and IEC 60898-1 | |
| HS Code | 8536201090 | |
| Country of Manufacture | India |
Frequently Asked Questions
What is the IMO US10C3003A used for?
The US10C3003A provides supplementary overload and short-circuit protection for three-pole control circuits in industrial panels, machinery and automation equipment.
What is the current rating of the US10C3003A?
The IMO US10C3003A has a rated operational current of 3 A.
How many poles does this circuit breaker have?
The US10C3003A has a 3-pole configuration, allowing three conductors to be protected and disconnected simultaneously.
What does the C curve characteristic mean?
The C curve magnetic trip operates at approximately five to ten times the rated current, allowing moderate inrush currents while maintaining dependable overload and short-circuit protection.
What voltage can the US10C3003A support?
The three-pole breaker is rated for up to 480Y/277 V AC under UL specifications and up to 415 V AC under IEC specifications.
How is the IMO US10C3003A installed?
The breaker mounts onto a standard EN 60715 DIN rail inside an electrical control panel or machinery enclosure.
Trusted by Industrial Panel Builders
IMO Precision Controls circuit protection products are used by panel builders, OEM manufacturers, machine builders and automation engineers seeking compact, dependable and straightforward electrical protection solutions.
