The Eaton/Cutler-Hammer GWF 25k is a molded case circuit breaker (MCCB) engineered for branch circuit and distribution system protection in industrial and commercial installations. Frame size G delivers dependable thermal-magnetic tripping across panelboards, switchboards, motor control centers, and busway applications. The mechanically trip-free mechanism prevents contact closure during fault conditions, with handle position clearly indicating trip status. Rated 50/60 Hz operation with multi-voltage compatibility and international standards compliance.
## Technical Specifications
• **Voltage Rating:** 440 VAC, 600 VAC, 240 VAC, 415 VAC, 250 VDC, 600 VDC
• **Current Rating:** 16–125 A ampere range; specific models include 25 A (GWF3025) and 63 A (GWF3063)
• **Interrupt Rating:** 25 kA at 415 VAC; 100 kA at 415 VAC (IEC 60947-2); 200 kA at 240 VAC (IEC 60947-2)
• **Frequency:** 50/60 Hz
• **Poles:** 1, 2, or 3 pole configurations available
• **Trip Type:** Non-interchangeable thermal-magnetic; fixed thermal/magnetic
• **Wire Size:** 14 to 1 AWG copper
• **Connection:** Line/load/pressure
• **Standard Calibration:** 40°C; 50°C factory calibration for elevated ambient temperature operation
• **Dimensions:** 2.63 × 3 × 4.88 inches (123.8 mm H × 76.2 mm W × 66.7 mm D for GWF3025)
## Key Features
• Mechanically trip-free design ensures interruption of short-circuit current regardless of handle position
• Non-interchangeable thermal-magnetic trip element
• NEMA AB1-1993 enclosure classification
• Wide ampere range accommodates diverse circuit protection requirements
## Standards Compliance
IEC 60947-2, UL 489, AS 2184, AS 3947-2, BS 4752 Part 1, NEMA AB1-1975, SABS 156, SEV 947.2, NF C 63-120, VDE 0660, Japanese T-Mark
## Typical Applications
Panelboards, switchboards, motor control centers, busway systems, main and branch circuit protection, distribution systems, busbar trunking tap-offs
