Eaton Power Defense Series Molded Case Circuit Breaker

Eaton Power Defense Series Molded Case Circuit Breaker

Product System and Core Positioning

Product family composition

Main series: Power Defense (globally recommended, 6 frame sizes), covering all scenarios of medium and low voltage distribution

Transition series: Series G, Series C (marked as "to be obsolete", soon to be phased out)

Specialized products: Motor Circuit Protector (MCP, 3-600A), Motor Protection Circuit Breaker (MPCB, 15-600A), suitable for motor start-up and operation protection

Core positioning: Targeting electrical OEMs, mechanical OEMs, industrial facilities, etc., providing an integrated distribution solution of "safety protection+intelligent monitoring+flexible configuration"

Summary of Key Technical Parameters

Category Core Parameters

Current range 15A (PD-1) -2500A (PD-6), MCP specific 3A-600A

Voltage level AC: up to 690Vac (IEC), 600Vac (UL/CSA); DC: up to 250Vdc (requires two poles in series)

Breaking capacity: AC up to 200kA (PD-1/2240Vac), DC up to 42kA (PD-1250Vdc)

Type of Release Unit: Thermal Magnetic Release (TMTU): Fixed/Adjustable Thermal Magnetic Characteristics; Electronic Release (PXR): LSI/LSIG Protection

Certification standards UL 489, CSA C22.2 No.5, IEC 60947-2, GB 14048.2-2008, CCC, A2L certification

Environmental adaptability working temperature: -20 ℃ to+70 ℃; Pollution level 3; Overvoltage category 3

Core functions and advantages

Security protection function

Arc flashover Reduction Maintenance System: Reduce arc flashover energy and lower PPE requirements

Ground fault protection: 30mA leakage module, supports I ² t and flat response curve, can disable protection function

Zone selective interlocking (ZSI): The fault point circuit breaker trips instantly, while others remain closed, reducing the range of power outages

Intelligent monitoring and communication

Circuit breaker health monitoring: tracking operation frequency, short-circuit fault level, internal temperature, etc., warning maintenance requirements

Energy metering: PXR 25 has an accuracy of 1% and supports power and energy consumption data collection

Communication protocol: Modbus RTU, CAM Link, supporting PLC, SCADA, cloud platform access

Structural and configuration advantages

Modular design: Accessories (auxiliary switches, release devices) can be installed on site to reduce inventory

Global adaptation: Same design meets multi regional certification and supports 100% UL rating (partial framework)

Flexible installation: fixed, plug-in, pull-out (PD-3/4/5), supporting DIN rail installation

Key information on the dimensions of each framework

Framework model, current range, trip unit options, core application scenarios

PD-1 15-125A thermal magnetic release (fixed), MCP small distribution, terminal equipment protection

PD-2 15-225A thermal magnetic release, PXR 10/20/25 commercial building, small and medium-sized machinery

PD-3 45-600A thermal magnetic release (fixed/adjustable), PXR industrial power distribution, motor control

PD-4 300-800A thermal magnetic release, PXR 10/20/25 large equipment, medium-sized distribution system

PD-5 320-1200A PXR 20/25 (electronic release only) Industrial plant main power distribution, generator matching

PD-6 700-2500A PXR 20/25 (electronic trip only) Large industrial facilities, power grid access

Accessories and customization options

Internal attachments

Auxiliary switch: provides contact status indication, supports 1NO/1NC to 4NO/4NC configuration

Release accessories: shunt release (12Vdc-600Vac), undervoltage release (12Vdc-600Vac)

external attachment

Terminal: made of copper/aluminum material, supporting multi wire connection and control wire tapping

Operating mechanism: Rotating handle, flexible shaft handle (NEMA 1/3R/4/4X)

Safety accessories: padlock device, phase blocking plate, terminal protective cover (IP2X/IP30)

Special Customization

Solar specific: PVGard series 1000Vdc series pole

Mining specific: E2 series (1100Vac)

DC dedicated: Suitable for 125-750VDC scenarios

Selection and ordering rules

Catalog number: 20 digit code, the first 14 digits are the basic model (including series, certification, frame, pole number, etc.), and the last 6 digits are factory modifications (attachments, customization)

Key selection elements: frame size → current level → trip type → number of poles (1-4 poles) → breaking capacity → accessory configuration

Ordering suggestion: Standard configuration uses a 14 bit code, and factory installation of accessories requires a 20 bit code; On site installation accessories can be ordered separately