Description
The Siemens JD63F400 is a molded case circuit breaker from the Sentron Series, designed for heavy-duty three-phase applications. Rated at 400 amps and 600 volts, this 3-pole breaker features thermal-magnetic protection with long-time and instantaneous trip functions.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Siemens Breakers |
| Category |
Circuit Breakers |
| Part Number |
JD63F400 |
| Subcategory |
Molded Case / 3-Pole |
| Family |
Sentron Series |
| Frame Type |
JD Frame |
| Type |
JD |
| Voltage Rating |
600 VAC |
| Amperage Rating |
400 A |
| Poles |
3 |
| Phase |
3 |
| Protection |
Thermal Magnetic |
| Functions |
LI – Long-Time and Instantaneous |
| Connection |
Bolt-On |
| AIC Ratings |
35 kA @ 480V |
| Application |
Commercial and industrial power systems |
| Dimensions (H x W x D) |
7.5" x 11" x 4" |
| Weight |
2.15 lbs |
Information About JD63F400
The JD63F400 is a Siemens molded case circuit breaker from the Sentron Series, offering reliable performance for low-voltage three-phase electrical systems. Built on the JD frame, it delivers a current capacity of 400A and operates at up to 600V. The breaker employs a thermal-magnetic trip mechanism with LI protection, ensuring both overload and short-circuit safeguarding. Its bolt-on connection and compact dimensions make it practical for integration into panelboards and distribution systems requiring standard breaking capacity.
Key Features:
- Current Rating: Provides 400 amps of continuous duty operation, supporting large-scale commercial and industrial loads without performance degradation.
- Voltage Rating: Handles up to 600 VAC, making it suitable for heavy-duty low-voltage distribution systems.
- Three-Pole Protection: Covers all three phases of a power system, ensuring balanced electrical distribution and complete fault protection.
- Trip Mechanism: Uses a thermal-magnetic trip unit with long-time and instantaneous functions for both overload and short-circuit conditions.
- Interrupting Capacity: Rated at 35 kAIC at 480V, providing strong fault-clearing ability to protect downstream equipment.
- Frame Design: Built on the JD frame for standard breaking capacity, combining durability with proven Siemens reliability.
- Bolt-On Connection: Ensures secure installation in panelboards and switchgear, reducing vibration risks and ensuring stable operation.
- Compact Dimensions: At 7.5" x 11" x 4", it conserves panel space while delivering full-rated protection.
- Lightweight Construction: Weighing only 2.15 lbs, it simplifies handling, mounting, and maintenance.
The JD63F400 delivers the reliability and precision required for secure, high-capacity power distribution across demanding commercial and industrial applications.
