Eaton PDG33M0175VFAJ Molded Case Circuit Breaker

The Eaton PDG33M0175VFAJ is a rugged molded case circuit breaker (MCCB) belonging to the PDG3 series, designed for reliable overcurrent protection in industrial power distribution systems. With a continuous current rating of 175 amperes and a voltage rating of 690 VAC, it is suitable for use as a main disconnect or feeder breaker in switchboards, panelboards, and motor control centers. The breaker combines thermal and magnetic trip elements to provide both overload and short-circuit protection.

Key Features

• Frame: PDG3, 3-pole

• Current rating: 175 A (fixed thermal)

• Voltage: 690 VAC maximum, 50/60 Hz

• Rated insulation voltage (Ui): 1000 V

• Interrupting capacity: 65 kA at 415 VAC (IEC 60947-2)

• Trip type: thermal-magnetic (fixed thermal, adjustable magnetic via dial)

• Magnetic trip adjustment: 5x to 10x of rated current

• Connection: bolt-on terminals for secure bus or cable connection

• Mechanical life: ≥10,000 operations

• Electrical life: ≥5,000 operations at rated current

• Protection class: IP20 (finger-safe terminals)

Technical Specifications

Protection Characteristics

The thermal-magnetic trip unit provides inverse-time overload protection via a bimetal element, allowing harmless temporary overloads (such as motor starting currents) while tripping on sustained overloads. The magnetic solenoid reacts instantaneously to short-circuit currents above the adjustable threshold, minimizing damage to downstream equipment. The common trip mechanism ensures all poles open simultaneously on any fault condition.

Applications

• Main and feeder protection in industrial switchboards

• Branch circuit protection in commercial buildings

• Motor circuit protection (when used with separate overload relay)

• Transformer secondary protection

• Generator output and UPS bypass circuits

Installation and Accessories

The PDG33M0175VFAJ features bolt-on terminals for direct connection to bus bars or cables. Optional accessories include auxiliary switches for status indication, shunt trips for remote opening, undervoltage releases, and motor operators for remote switching. The compact dimensions allow high-density installation in distribution panels, saving valuable enclosure space.

With its high interrupting capacity and robust construction, the Eaton PDG33M0175VFAJ ensures reliable circuit protection and continuity of service in critical power applications.