Original price was: £36.00.£27.11Current price is: £27.11.
The IMO US10D300.5A is a compact and dependable UL1077 supplementary protector miniature circuit breaker designed to protect industrial control circuits, automation equipment and electrical machinery against overload and short-circuit conditions. Manufactured by IMO Precision Controls, it provides reliable circuit protection for panel builders, machine manufacturers and industrial maintenance applications.
This supplementary protector features a D Curve tripping characteristic, allowing it to accommodate the high starting currents commonly associated with transformers, solenoids, motors and other inductive equipment. Its compact modular construction simplifies installation while helping conserve valuable space inside electrical control cabinets.
With a rated current of 0.5 A, a three-pole configuration and a 10 kA short-circuit breaking capacity, the US10D300.5A is suitable for low-current three-phase control and equipment circuits requiring dependable supplementary overcurrent protection. Its DIN rail mounting format enables straightforward integration into industrial panels and machinery.
Supplementary protectors such as the IMO US10D300.5A automatically disconnect a circuit when excessive current is detected. This helps protect internal equipment wiring, control components and connected devices from damage caused by overloads and short circuits.
The D Curve characteristic allows the breaker to tolerate temporary current surges without unnecessary operation, making it particularly useful for inductive devices with high initial energisation currents. Its three-pole arrangement provides coordinated disconnection across three conductors within industrial equipment and automation systems.
| Current | 300.5 A |
|---|---|
| Phase | Three Phase |
| HS Code | 8536201090 |
| Country of Manufacture | India |
The US10D300.5A provides supplementary overload and short-circuit protection for low-current industrial control, automation and equipment circuits.
This model has a rated current of 0.5 A.
The US10D300.5A has a three-pole configuration, allowing three conductors to be protected and disconnected together.
A D Curve breaker tolerates relatively high temporary inrush currents, making it suitable for inductive loads such as transformers, solenoids and certain motor circuits.
The supplementary protector is designed for installation on a standard DIN rail inside an electrical control panel, machine cabinet or equipment enclosure.
IMO supplementary protectors are widely used by panel builders, automation engineers and machine manufacturers to provide reliable circuit protection, compact installation and dependable operation within industrial electrical equipment.{ "@context": "https://schema.org/", "@type": "Product", "name": "IMO US10D300.5A UL1077 Miniature Circuit Breaker 3 Pole 0.5A D Curve", "sku": "US10D300.5A", "mpn": "US10D300.5A", "brand": { "@type": "Brand", "name": "IMO Precision Controls" }, "category": "Miniature Circuit Breakers", "description": "IMO US10D300.5A three-pole UL1077 supplementary protector with a 0.5 A rated current, D Curve tripping characteristic and 10 kA breaking capacity for industrial control and automation 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": "D Curve" }, { "@type": "PropertyValue", "name": "Breaking capacity", "value": "10 kA" }, { "@type": "PropertyValue", "name": "Mounting type", "value": "DIN rail" } ] } { "@context": "https://schema.org", "@type": "FAQPage", "inLanguage": "en-GB", "mainEntity": [ { "@type": "Question", "name": "What is the IMO US10D300.5A used for?", "acceptedAnswer": { "@type": "Answer", "text": "The US10D300.5A provides supplementary overload and short-circuit protection for low-current industrial control, automation and equipment circuits." } }, { "@type": "Question", "name": "What is the rated current of this supplementary protector?", "acceptedAnswer": { "@type": "Answer", "text": "This model has a rated current of 0.5 A." } }, { "@type": "Question", "name": "How many poles does the US10D300.5A have?", "acceptedAnswer": { "@type": "Answer", "text": "The US10D300.5A has a three-pole configuration, allowing three conductors to be protected and disconnected together." } }, { "@type": "Question", "name": "What does the D Curve characteristic mean?", "acceptedAnswer": { "@type": "Answer", "text": "A D Curve breaker tolerates relatively high temporary inrush currents, making it suitable for inductive loads such as transformers, solenoids and certain motor circuits." } }, { "@type": "Question", "name": "How is the IMO US10D300.5A installed?", "acceptedAnswer": { "@type": "Answer", "text": "The supplementary protector is designed for installation on a standard DIN rail inside an electrical control panel, machine cabinet or equipment 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...