Overview
The ABB T3N175TW is a molded case circuit breaker from ABB’s proven SACE Tmax T3 series, designed for reliable industrial electrical protection. This 175 amp, 3-pole molded case circuit breaker features a Tmax T3 frame with a thermal-magnetic trip unit, rated for 480V AC operation. Part number 1SDA053564R1, the T3N175TW delivers dependable overcurrent and short-circuit protection for industrial power distribution systems.
Key Features
- Thermal-Magnetic Trip Unit: Non-interchangeable trip units use electromagnetic relays for overcurrent trip protection, with thermal overload protection provided by heat-sensitive bimetals.
- High Interrupting Capacity: High interrupting capacity suitable for demanding applications, ensuring safety and durability in power distribution systems.
- Precise Protection: Short circuit protection begins at 10 times the thermal rating of the breaker using a precise magnetic coil.
- Regulatory Compliance: UL489/CSA 22.2 version carries an IEC-60947-2 rating.
- Industrial-Grade Construction: State of the art construction in contacts and arcing chambers aids in limiting damaging fault currents through protected circuits.
Technical Specifications
The T3N175TW delivers precise electrical protection with the following specifications:
- Frame Size: Tmax T3
- Rated Current: 175 Amperes
- Voltage Rating: 480V AC / 500VDC
- Poles: 3
- Trip Type: Thermal-Magnetic (N – Normal Performance)
- Interrupt Rating: 25 kA @ 480VAC
- Mounting: Fixed terminal
- Terminal Type: Load side lugs (customizable in field)
Typical Applications
The T3N175TW is suitable for industrial power distribution applications including:
- Motor control centers and feeder protection
- Industrial switchboard installations
- Facility main and branch circuit protection
- Manufacturing equipment power distribution
- Critical load protection in demanding environments
Compatibility & Replacements
The T3 breaker family ranges from 60 through 225 amperes, offering scalable protection options. Alternative part numbers include T3N17STW, T3NI75TW, and various suffix designations (T3N175TW-A through T3N175TW-N). The ABB T3N175TW maintains backward compatibility with existing SACE Tmax T3 installations and can be retrofitted into facilities requiring like-for-like circuit breaker replacement without panel modification.
