140G-K0F4-D40
Product ID:230934
Updated: 2026/4/3
Key Features
- 11. Reliable Performance: The Allen-Bradley 140G-K0F4-D40 provides consistent performance in high-current applications, ensuring your electrical system operates smoothly and efficiently.;
- 22. Adjustable Protection: With adjustable thermal and magnetic protection, this circuit breaker can be tailored to meet specific operational needs, enhancing overall system reliability.;
- 33. High-Altitude Capability: Designed to operate at 90% of its voltage rating at 3000 meters (9840 feet) altitude, this breaker is suitable for a wide range of industrial environments.;
- 44. Durable Construction: Built with durable materials and designed for longevity, the 140G-K0F4-D40 ensures a long service life even under harsh conditions.;
- 55. Comprehensive Specifications: Featuring a 400A rating, 80% MCCB current range, and an interrupting rating of 65kA at 600V AC, this breaker meets stringent industry standards for safety and performance.
Technical Specifications
Detailed engineering parameters
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Dimension Unit | CM | Weight Unit | KG |
| Stock Status | NON_STOCKED | Dimension Length | 29.718 |
| Dimension Width | 25.527 | Lead Time | 15 |
| Dimension Height | 24.638 | Quick Turnaround | false |
| Preferred Availability | false | Repairable | NOT_REPAIRABLE |
| Ambient temperature without derating | 104 °F | Rated uninterrupted current (Iu) | 98% of current rating @ 3000 m (9840 ft) altitude |
| Operational voltage (Ue) | 90% of voltage rating @ 3000 m (9840 ft) altitude | Wire temperature rating | Al or Cu 75°C |
| Storage temperature | -40 °F | Depth | 103.5 mm |
| Width | 185 mm | Device construction | Built-in device fixed built-in technique |
| Height | 205 mm | Factory option | None |
| Shock | Peak acceleration: 150 m/s2 peak, pulse duration 11 ms | Vibration | 2...13.2 Hz ±1 mm, 13.2...100 Hz ±0.7 G |
| Mechanical life operations | 20000 /h | Weight | 6.051 |
| Degree of protection (IP) | IP40 | DIN rail (top hat rail) mounting optional | False |
| Suitable for DIN rail (top hat rail) mounting | False | Type of electrical connection of main circuit | Screw connection |
| Position of connection for main current circuit | Front side | Motor drive optional | True |
| With switched-off indicator | False | Motor drive integrated | False |
| Protection type | T/M-adjustable thermal/adjustable magnetic TMA | Rated service short-circuit breaking capacity (Ics) | IEC 60947-2: 100% Icu @ 750V DC, 3-poles in series, thermal-magnetic trip units only |
| Rated ultimate short-circuit breaking capacity (Icu) | IEC 60947-2: 85kA @ 500V AC, 50/60 Hz | Interrupting rating | 65kA @ 600V AC, 50/60 Hz per NEMA, UL, CSA |
| Electrical life cycle | 7000 (400 A)/5000 (600 A) @ 415V AC | Thermal trip rating, max | 400 A @ ambient temperature 40 °C |
| Insulation voltage (Ui) | Rated 1000V per IEC | Watt loss | Thermal magnetic type: 78 W |
| Voltage for reverse-fed circuit breaker, max | 690V AC per IEC | Magnetic trip current (Im) | 2000 A |
| Thermal trip current (Ir) | 280 A | Current range | 80% MCCB |
| Frame size | 400 A | Rated impulse withstand voltage (Uimp) | 8 kV |
| Type of control element | Toggle | Rated permanent current Iu | 400 A |
| Complete device with protection unit | True | Integrated earth fault protection | False |
| With integrated under voltage release | False | Number of poles | 4 |
Specifications may be subject to change without notice