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Schneider Electric LV839243 — Air Circuit Breakers

Schneider Electric LV839243 MX Opening Coil, 200-250 V AC/DC

MPNLV839243
Obsolete

Schneider Electric MasterPact MTZ, MX 2nd opening voltage release, 200-250 V AC/DC, drawout mounting, 50 ms response time.

Schneider Electric LV839243 datasheet (PDF)
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

LV839243 — Identification
ParameterValue
Product typeVoltage release
ApplicationControl
LV839243 — Mechanical & connection
ParameterValue
Mounting modeDrawout
LV839243 — Other specifications
ParameterValue
Response time50 ms +/- 10 % MasterPact MTZ1 50 ms +/- 10 % MasterPact MTZ2 50 ms +/- 10 % MasterPact MTZ3
Device short namesecond MX
Supply holding power4.5 VA 4.5 W
Voltage release typeOpening coil
Threshold tripping voltage0.7...1.1 Un
Coil voltage200...250 V AC 50/60 Hz 200...250 V DC

Product details

The LV839243 is a Schneider Electric MX 2nd opening voltage release designed for MasterPact MTZ drawout circuit breakers. It operates as a control voltage release, tripping the breaker when the control voltage drops to between 0.7 and 1.1 times the rated Un.

The control circuit accepts 200-250 V AC at 50/60 Hz or 200-250 V DC, with a holding power draw of 4.5 VA / 4.5 W. The 50 ms response time (±10%) is consistent across all MTZ frame sizes — MTZ1, MTZ2, and MTZ3.

Integration note

Drawout mounting means the coil installs into the breaker's control wiring cradle — no DIN-rail or panel footprint of its own. The wiring interface is the standard MTZ drawout connector.

Frequently asked questions

What is the mounting mode for LV839243?

The LV839243 uses drawout mounting, meaning it plugs into the MasterPact MTZ breaker's control wiring cradle rather than mounting on a DIN rail or panel.

What is the response time of LV839243?

The LV839243 has a response time of 50 ms ±10%, consistent across MasterPact MTZ1, MTZ2, and MTZ3 frames.

MPN
LV839243