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Product Introduction
The Allen Bradley 140G-K3F3-D40 Molded Case Circuit Breaker is a robust and reliable molded case circuit breaker (MCCB) designed to provide advanced protection for electrical distribution systems in industrial environments. As part of the 140G series, this breaker is engineered to handle high current loads while ensuring safe and efficient operation.
With a rated current of 400 A and a breaking capacity of 35 kA at 480 VAC, this MCCB offers strong protection against overloads and short circuits. It features a K frame design, providing a compact yet powerful solution for medium to high-power applications. The thermal-magnetic (T/M) trip unit includes adjustable thermal and magnetic settings, allowing precise configuration based on system requirements.
This breaker is a 3-pole device, making it suitable for three-phase power systems. Designed with an 80% rating, it ensures stable continuous operation under defined conditions. Its mountable structure without bus bar mounting offers flexibility for panel integration in various industrial installations.
Product Specifications
| Parameter | Description |
|---|---|
| Product Model | 140G-K3F3-D40 |
| Series | 140G MCCB |
| Frame Type | K Frame |
| Rated Current | 400 A |
| Number of Poles | 3 Pole |
| Breaking Capacity | 35 kA @ 480 VAC |
| Trip Unit Type | Thermal-Magnetic (Adjustable) |
| Thermal Setting | Adjustable |
| Magnetic Setting | Adjustable |
| Utilization Rating | 80% Rated |
| Mounting Type | Panel Mountable |
| Bus Bar Compatibility | No Bus Bar Mounting |
| Standards | IEC |
| Dimensions | 205 × 108.5 × 140 mm |
| Weight | 3.25 kg |
Applications
● Industrial Power Distribution
Reliable circuit protection ensures safe operation of electrical systems.
● Motor Protection Circuits
Adjustable trip settings provide tailored protection for motor loads.
● Control Panels and Switchgear
Compact K frame design allows efficient integration into panels.
● Manufacturing Facilities
High breaking capacity protects equipment from fault conditions.
● Energy and Utility Systems
Stable performance under high load conditions supports critical infrastructure.
Advantages
● High Breaking Capacity
35 kA at 480 VAC ensures strong short-circuit protection.
● Adjustable Protection Settings
Thermal and magnetic adjustments allow precise customization.
● Compact and Efficient Design
K frame structure provides high performance in a compact size.
● Flexible Installation
Panel mountable without bus bar requirement increases installation options.
● Reliable Continuous Operation
80% rated design supports stable long-term use.
● Durable Construction
Designed for industrial-grade reliability and longevity.
