Original price was: £36.00.£27.11Current price is: £27.11.
The IMO US10C300.5A is a compact UL1077 supplementary miniature circuit breaker designed to protect sensitive industrial control circuits against overload and short-circuit conditions. Manufactured by IMO Precision Controls, this three-pole protective device is suitable for control panels, OEM machinery and automation equipment requiring dependable low-current circuit protection.
Featuring a C curve tripping characteristic, the US10C300.5A can accommodate moderate start-up and inrush currents while providing effective thermal-magnetic protection. This makes it well suited to sensitive three-phase control circuits, instrumentation, small transformers, control power supplies and other low-current industrial loads.
With a 0.5 A rated current, 3-pole configuration and 10 kA short-circuit breaking capacity, the IMO US10C300.5A provides simultaneous protection and isolation across three conductors. Its modular DIN rail-mounted construction enables straightforward installation within machinery enclosures and industrial electrical cabinets.
The IMO US10C300.5A automatically disconnects the protected circuit when excessive current is detected. Its thermal element responds to sustained overload conditions, while the magnetic trip mechanism rapidly interrupts higher-current short circuits. This dual-action protection helps reduce the risk of damage to sensitive control equipment, wiring and connected electrical components.
As a UL1077 supplementary protector, the US10C300.5A is designed for installation within equipment where appropriate branch-circuit protection is already provided. Its low 0.5 A rating makes it particularly suitable for auxiliary circuits, instrumentation and sensitive control applications requiring three-pole disconnection.
| Current | 300.5 A |
|---|---|
| Phase | Three Phase |
| HS Code | 8536201090 |
| Country of Manufacture | India |
The US10C300.5A provides supplementary overload and short-circuit protection for sensitive three-pole control circuits in industrial panels, machinery and automation equipment.
The IMO US10C300.5A has a rated operational current of 0.5 A.
The US10C300.5A has a 3-pole configuration, allowing three conductors to be protected and disconnected simultaneously.
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.
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.
The breaker mounts onto a standard EN 60715 DIN rail inside an electrical control panel or machinery enclosure.
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.{ "@context": "https://schema.org/", "@type": "Product", "name": "IMO US10C300.5A UL1077 Miniature Circuit Breaker 3 Pole 0.5A C Curve", "sku": "US10C300.5A", "mpn": "US10C300.5A", "brand": { "@type": "Brand", "name": "IMO Precision Controls" }, "category": "Supplementary Circuit Protectors", "description": "IMO US10C300.5A UL1077 supplementary miniature circuit breaker with a 0.5 A rated current, three-pole configuration, C curve tripping characteristic and 10 kA breaking capacity for sensitive industrial control circuits.", "additionalProperty": [ { "@type": "PropertyValue", "name": "Rated current", "value": "0.5 A" }, { "@type": "PropertyValue", "name": "Number of poles", "value": "3" }, { "@type": "PropertyValue", "name": "Trip characteristic", "value": "C Curve" }, { "@type": "PropertyValue", "name": "Short-circuit breaking capacity", "value": "10 kA" }, { "@type": "PropertyValue", "name": "UL rated operational voltage", "value": "480Y/277 V AC" }, { "@type": "PropertyValue", "name": "IEC rated operational voltage", "value": "415 V AC" }, { "@type": "PropertyValue", "name": "Mounting type", "value": "DIN Rail" }, { "@type": "PropertyValue", "name": "Protection degree", "value": "NEMA 1 / IP20" } ] } { "@context": "https://schema.org", "@type": "FAQPage", "inLanguage": "en-GB", "mainEntity": [ { "@type": "Question", "name": "What is the IMO US10C300.5A used for?", "acceptedAnswer": { "@type": "Answer", "text": "The US10C300.5A provides supplementary overload and short-circuit protection for sensitive three-pole control circuits in industrial panels, machinery and automation equipment." } }, { "@type": "Question", "name": "What is the current rating of the US10C300.5A?", "acceptedAnswer": { "@type": "Answer", "text": "The IMO US10C300.5A has a rated operational current of 0.5 A." } }, { "@type": "Question", "name": "How many poles does this circuit breaker have?", "acceptedAnswer": { "@type": "Answer", "text": "The US10C300.5A has a 3-pole configuration, allowing three conductors to be protected and disconnected simultaneously." } }, { "@type": "Question", "name": "What does the C curve characteristic mean?", "acceptedAnswer": { "@type": "Answer", "text": "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." } }, { "@type": "Question", "name": "What voltage can the US10C300.5A support?", "acceptedAnswer": { "@type": "Answer", "text": "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." } }, { "@type": "Question", "name": "How is the IMO US10C300.5A installed?", "acceptedAnswer": { "@type": "Answer", "text": "The breaker mounts onto a standard EN 60715 DIN rail inside an electrical control panel or machinery enclosure." } } ] }
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...