Eaton HFD3020L Molded Case Circuit Breaker Unit

Module Feature

HFD3020L belongs to Eaton Series C HFD molded case circuit breaker. 3-pole,20A rated current,600VAC /250VDC. It adopts thermal-magnetic trip mechanism; thermal section protects overload,magnetic section provides instantaneous short-circuit protection. High interrupt capacity 100kAIC@240V,65kAIC@480V. Widely used in MCC cabinets,power distribution panels,fan and pump industrial power circuit protection.

Working principle

Thermal bimetallic element heats and bends under continuous overload current to trigger trip. Magnetic coil instantly trips when short-circuit large current occurs. Manual handle for close/trip/reset operation. Auxiliary contacts can be fitted optionally to feedback breaker status to PLC system.

Onboard components

Molded insulating housing,bimetal thermal element,magnetic trip coil,main contact assembly,arc quenching chamber,manual operating handle,line & load terminal blocks.

LED indicators

No built-in LED indicators; status feedback from optional auxiliary contact.

Hardware self-diagnosis

Contact surface inspection,insulation resistance test,trip function test,arc chamber contamination inspection.

Programming software

No dedicated programming software,manual operation and hardwired status feedback.

Electrical & Process Parameters

Model:HFD3020L Brand:Eaton Device type:Series C HFD Molded Case Circuit Breaker Pole:3P Rated current:20A Rated voltage:600VAC,250VDC Trip:Thermal-magnetic Interrupt rating:100kAIC@240VAC,65kAIC@480VAC Frequency:50/60Hz Cooling:Natural convection cooling Protection:Overload thermal protection,short circuit instantaneous magnetic protection

Mechanical & Structure

Mounting:Panel / MCC bucket mounting Protection class:IP20 front face Housing:Glass-filled thermoplastic molded case

Environmental

Operating temperature:-10℃ ~ +40℃ Storage temperature:-40℃ ~ +85℃ Ambient humidity:5~95% non-condensing Certification:CE,UL compliant Status: Eaton high interrupt MCCB for industrial power distribution and MCC application

Installation

Follow strict ESD safety procedure before handling.Mount breaker firmly inside MCC bucket or control panel.Connect line side and load side power lugs with correct torque.Check trip unit rating matching circuit load before power commissioning.

Interface

Line side terminal,load side terminal,optional auxiliary contact terminal.

Diagnostic

Nuisance trip:overload,high ambient temperature or incorrect amp rating. Fail to trip:contact welding or damaged trip element. Arc discharge:overcurrent or loose wiring terminal.

Product Brief

Eaton HFD3020L Series C 3-pole 20A molded case circuit breaker,600VAC rated,thermal-magnetic trip,high interrupt capacity for industrial power distribution and motor control center circuit protection.