Overview
The Siemens LXD63B600 is an LD-frame molded case circuit breaker from the Sentron Series, engineered for three-phase industrial power distribution. Rated at 600 amperes at 600 volts AC, this unit provides dependable thermal-magnetic overcurrent protection with a 25kAIC interrupting rating at 600V and 35kAIC at 480V. The non-interchangeable trip unit design ensures application-specific protection and prevents accidental misapplication in demanding industrial environments.
Key Features
- 3-pole, 3-phase configuration for three-phase circuits
- 600-amp current rating at 600V AC (50/60 Hz)
- Thermal-magnetic trip mechanism with long-time, short-time, and instantaneous trip functions
- 25kAIC interrupt rating at 600V; 35kAIC at 480V
- Bolt-on connection type for secure mounting
- Non-interchangeable trip unit prevents misapplication
- UL listed for reverse-fed applications
- Operating temperature: standard 40°C rating
Technical Specifications
- Manufacturer: Siemens
- Series: Sentron
- Type: LXD (LD Frame)
- Number of Poles: 3
- Current Rating: 600 Amp @ 40°C
- Voltage Rating: 600V AC @ 50/60 Hz; 500V DC maximum
- Trip Type: Thermal Magnetic (LI – Long-Time and Instantaneous)
- Interrupting Capacity: 25kAIC @ 600V; 35kAIC @ 480V
- Connection Type: Bolt-On
- Operating Temperature: 40°C (Standard)
- Dimensions: 6.6″ L × 8.8″ W × 14.7″ H
- Weight: 18.05 lbs
- Certifications: UL Listed
- Trip Range: 3000–6000 Amps
Typical Applications
The LXD63B600 is suited for:
- Large industrial motor circuits requiring 600-amp protection
- Main distribution buses and feeder protection in industrial facilities
- Heavy machinery and process equipment power feeds
- Commercial and industrial switchboards requiring high current capacity
- Applications requiring reverse-fed breaker compatibility
Compatibility & Replacements
Compatible With
- Siemens Sentron low-voltage power distribution systems
- LD-frame molded case circuit breaker panelboards
- Industrial electrical cabinets and switchgear
- Three-phase 600V main and feeder circuits
- Systems supporting 50/60 Hz AC and 500V DC applications
Replaces / Drop-In Replacement For
- ITE Siemens LXD63B600 (original OEM designation)
- Verify exact compatibility with your system integrator before substitution, as non-interchangeable trip units are application-specific.
Works With
- Siemens industrial control systems and motor starters
- Standard three-phase 600V distribution architectures
- Thermal-magnetic protection coordination schemes
- Bolt-on panelboard assemblies
