Square D V5DB133Y000 Medium‑Voltage Circuit‑Breaker Unit

Module Feature

V5DB133Y000 is Square D (Schneider Electric) V5DB series draw‑out medium‑voltage vacuum circuit breaker, belongs to VR product family. It adopts vacuum interrupter for arc quenching, rated current 1200A. It is installed inside metal‑clad medium‑voltage switchgear cabinet, providing overload, short‑circuit protection for transformers, motors and busbars in industrial power distribution systems. Draw‑out trolley structure supports working/test/isolation position switching for convenient inspection, maintenance and component replacement.

Working principle

When overload or short‑circuit fault occurs, the operating mechanism drives contacts inside vacuum interrupter to separate. The electric arc is rapidly extinguished in vacuum environment to cut‑off fault circuit and protect downstream equipment. It supports manual and electric closing / tripping operation.

Onboard components

Vacuum interrupter bottle, spring energy‑storage operating mechanism, draw‑out trolley chassis, main tulip contact assembly, secondary control terminal block, mechanical position indicator, metal trolley housing, mechanical interlock assembly.

LED indicators

No built‑in LED lamps. Circuit‑breaker ON/OFF / test position status is displayed via mechanical position indicator; alarm signals rely on external switchgear auxiliary modules.

Hardware self‑diagnosis

Monitor energy‑storage completion status, coil circuit health and contact position by auxiliary switches; system upper monitoring device realizes fault alarm. Internal wear condition needs periodic offline inspection.

Programming software

No dedicated configuration software. Protection function parameters are set through matching external protection relay.

Electrical & Process Parameters

Model:V5DB133Y000 Brand:Square D (Schneider Electric) Device type:Draw‑out Medium‑Voltage Vacuum Circuit Breaker Rated current:1200A Series:VR / V5DB Function:Overload, short‑circuit protection for medium‑voltage power distribution system

Mechanical & Structure

Mounting:Draw‑out trolley installed in medium‑voltage switchgear cubicle Protection class:IP20 (cabinet overall protection grade) Housing:Heavy‑duty metal draw‑out trolley assembly

Environmental

Operating temperature:-5℃ ~ +40℃ Storage temperature:-40℃ ~ +85℃ Ambient humidity:5~95% non‑condensing Certification:Compliant with IEC medium‑voltage switchgear standards Status:Square D original VR‑series medium‑voltage vacuum circuit breaker

Installation

Push trolley into switchgear cabinet, lock at working or test position. Complete secondary control wiring, perform manual / electric closing‑tripping test. Cooperate with protection relay to finish protection setting and whole‑system commissioning.

Interface

Main‑circuit high‑voltage tulip contacts, secondary control wiring terminals, mechanical interlock interface.

Diagnostic

Cannot close switch:Energy‑storage incomplete, interlock condition not met or closing coil damage. Failed to trip:Tripping coil fault or mechanical mechanism stuck. Contact overheating:Main tulip contacts aging, insufficient contact pressure.

Product Brief

Square D V5DB133Y000 draw‑out medium‑voltage vacuum circuit breaker, 1200A rated current, used for industrial medium‑voltage switchgear for power distribution fault cut‑off and equipment protection.