US10D3050A IMO 10kA UL1077 MCB 3 pole 50A D Curve

Q: How many poles does the US10D3050A have?

The breaker features a three-pole configuration for protecting three-phase electrical circuits.

Q: What is the interrupting capacity?

The US10D3050A provides a 10 kA breaking capacity for dependable protection against fault currents.

SKU: US10D3050AMPN: US10D3050A

List Price £36.00 ex VAT

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Why Choose the IMO US10D3050A UL1077 Miniature Circuit Breaker?

The IMO US10D3050A is a robust UL1077 supplementary protector miniature circuit breaker (MCB) engineered to provide dependable overcurrent protection for industrial control panels, OEM machinery and automation systems. Manufactured by IMO Precision Controls, this high-quality circuit breaker delivers reliable protection while supporting safe and efficient operation in demanding industrial environments.

Designed with a compact DIN rail mounted format, the US10D3050A offers straightforward installation and dependable long-term performance. Its 10 kA breaking capacity provides excellent protection against overloads and short circuits, making it suitable for protecting industrial equipment, motor circuits and electrical control systems.

Featuring a 50 A current rating, a D curve tripping characteristic and a three-pole configuration, the US10D3050A is particularly well suited for applications with high inrush currents, including motors, transformers, compressors and other inductive loads operating on 230/400 V AC systems.

Key Advantages

Compact UL1077 supplementary protector for industrial applications.
50 A current rating for higher current industrial circuits.
D curve tripping characteristic ideal for inductive loads with high starting currents.
Three-pole configuration for three-phase electrical systems.
10 kA breaking capacity provides dependable fault protection.
DIN rail mounting enables fast installation inside control panels.

Key Features

IMO US10 UL1077 series.
50 A rated current.
D curve operating characteristic.
Three-pole design.
10 kA interrupting capacity.
Suitable for 230/400 V AC electrical systems.
Compact DIN rail mounted construction.
Designed for industrial automation and machinery protection.

Reliable Circuit Protection for Industrial Machinery

The IMO US10D3050A provides reliable overload and short-circuit protection for industrial electrical equipment. Its D curve operating characteristic is specifically intended for applications where motors and other inductive equipment generate high inrush currents during start-up, reducing nuisance tripping while maintaining excellent circuit protection.

Its durable construction and compact design make it an excellent choice for panel builders, machine manufacturers and maintenance engineers seeking reliable protection and simple installation within modern industrial control systems.

Typical Applications

Industrial control panels.
Motor starter circuits.
OEM machinery.
Automation equipment.
Industrial electrical cabinets.
Three-phase distribution and protection systems.

Technical Specifications

Current	50 A
Phase	Three Phase
Manufacturer	IMO Precision Controls
Series	US10 UL1077
Model	US10D3050A
Product type	UL1077 supplementary protector miniature circuit breaker
Rated current	50 A
Number of poles	3
Trip characteristic	D Curve
Rated voltage	230/400 V AC
Frequency	50 / 60 Hz
Breaking capacity	10 kA
Mounting type	35 mm DIN rail
Terminal capacity	1 to 25 mm²
Protection rating	IP20
Standards	UL1077, IEC/EN 60898, IEC/EN 60947-2, CE
Dimensions (H × W × D)	approx. 85.5 × 52.7 × 78 mm
Weight	approx. 0.30 kg
HS Code	8536201090
Country of Manufacture	India
Poles	3-pole
Device Type	MCB
Trip Curve	D curve
Breaking Capacity	10 kA

Frequently Asked Questions

What is the IMO US10D3050A used for?

It is used as a UL1077 supplementary protector to safeguard industrial machinery and control circuits against overloads and short circuits.

Why does this breaker use a D curve?

The D curve characteristic is designed for circuits with high inrush currents, making it ideal for motors, transformers and other inductive equipment.

How many poles does the US10D3050A have?

The breaker features a three-pole configuration for protecting three-phase electrical circuits.

What is the interrupting capacity?

The US10D3050A provides a 10 kA breaking capacity for dependable protection against fault currents.

How is this circuit breaker installed?

The breaker is designed for quick installation onto a standard 35 mm DIN rail inside industrial electrical control panels.

Trusted by Industrial Automation Professionals

IMO Precision Controls circuit protection products are widely trusted by panel builders, machine manufacturers and industrial engineers for reliable performance, simple installation and dependable protection in demanding automation environments.

UK delivery

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