140UT-D7D3-C15
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Overview of Allen Bradley 140UT-D7D3-C15
The Allen Bradley 140UT-D7D3-C15 is a high-performance molded case circuit breaker designed for industrial control and power distribution systems. Manufactured by Rockwell Automation, this 3-pole D-frame breaker offers reliable protection for equipment and circuits up to 15 A, with an interrupting capacity of 65 kA at 480Y/277V AC. Engineered for use in closed, non-hazardous environments, the 140UT series delivers consistent performance across a wide operating temperature range. It is suitable for both new installations and retrofits in commercial and industrial facilities, supporting applications from HVAC to lighting and machinery. UL 489 listed and built to North American standards, this model integrates fixed thermal and magnetic trip mechanisms for precise overcurrent and short-circuit protection.
Key Features of Allen Bradley 140UT-D7D3-C15
- Three-pole configuration, D-frame, 15 A current rating
- 65 kA interrupting rating at 480Y/277V AC
- Fixed thermal and fixed magnetic trip (15–20 x In)
- UL 489 listed for branch circuit protection
- Ambient temperature range: -25°C to +60°C
- Current limiting design for enhanced safety
- Suitable for backfeeding up to 600Y/347V
- Designed for use in non-hazardous, indoor environments
Technical Specs of 140UT-D7D3-C15
| Attribute | Specification |
|---|---|
| Brand/Model | Allen Bradley 140UT-D7D3-C15 |
| Frame | D |
| Poles | 3 |
| Rated Current | 15 A |
| Max Voltage | 480Y/277V AC |
| Interrupting Rating | 65 kA |
| Trip Type | Fixed thermal/magnetic |
| Ambient Temp | -25°C to +60°C |
| Standards | UL 489 |
| Dimensions | D-frame (see datasheet) |
Applications / Use Case
The Allen Bradley 140UT-D7D3-C15 is commonly applied in industrial and commercial electrical panels, providing circuit protection for motors, HVAC systems, lighting, and general-purpose branch circuits. Its high interrupting capacity makes it a preferred choice for installations where high-fault currents are possible. The breaker is also suitable for panelboards and switchgear, especially in facilities requiring robust, code-compliant protection. Because it is rated for fixed thermal and magnetic trip, it ensures rapid disconnection in overload and short-circuit conditions, minimizing downtime and equipment damage. This model is ideal for environments with standard electrical loads and is not intended for hazardous locations. It is compatible with a range of accessories for panel mounting and system integration.
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