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GE TKMA31000WL
Product Name: GE TKMA Series Molded Case Circuit Breaker
Product Introduction: The TKMA31000WL is a 1000 A, 3-pole molded case circuit breaker from GE’s K1200 Line, designed for heavy-duty three-phase feeder protection in industrial power distribution. It provides both long-time (overload) and instantaneous (short-circuit) thermal-magnetic protection.
Detailed content
Technical Specifications:
- Manufacturer: General Electric
- Family / Frame: K1200 Line, TKM frame
- Poles: 3 (3-phase)
- Current Rating: 1000 A
- Voltage Rating: 240 / 480 / 600 VAC
- Trip Type: Thermal-magnetic (LI — Long-Time and Instantaneous)
- Interrupting Capacity (AIC):
- 42 kA at 240 V
- 30 kA at 480 V
- 22 kA at 600 V
- Connection Type: Feed-thru with line & load side lug terminals
- Lug Conductor Range: 250–350 kcmil or 300–500 kcmil (Cu/Al)
- Temperature Rating: 40 °C
- Dimensions: 5.5 × 8.25 × 15.5 in
- Weight: 54.26 lb
Functional Features:
- Interchangeable trip unit within the TKMA/K1200 family for standardized protection across multiple panels
- Bolt-on terminal configuration compatible with standard MCCB enclosures
- Thermal-magnetic trip provides both instantaneous and timed overload protection for quick fault isolation
Application Scenarios: Main or branch circuit protection in manufacturing plants, data centers, and large facilities; three-phase distribution feeding large motors, transformers, and heavy loads.
Installation Requirements:
- Verify exact enclosure compatibility and mounting hardware torque specifications
- Confirm correct alignment of line/load terminals to prevent connection issues
- Ensure conductor sizing and lug types meet the breaker’s ratings and site standards
- Wire into the protection scheme with appropriate shunt trip or auxiliary options if required
Usage Precautions:
- Perform functional testing including temperature rise checks under nominal load after installation
- Verify coordination with upstream protection devices
- Schedule regular maintenance to inspect terminal connections, verify insulation integrity, and confirm mechanical operation; replace or refurbish as needed
