ABB 1SDA062759R1 T7S 1000 PR332/P-LSIG MCCB Unit

Module Feature

1SDA062759R1 is the full ordering code of ABB SACE Tmax T7S molded case circuit breaker.

It is fixed type, three-pole, front terminal wiring, rated current 1000A. Equipped with PR332/P-LSIG solid-state trip relay, integrating overload, short time delay short circuit, instantaneous short circuit and earth fault protection functions. Stored energy spring operating mechanism allows remote electrical closing and opening. Built-in metering, event logging and diagnostic functions, communication module optional. High breaking capacity, suitable for heavy-duty industrial distribution, generator outlet and large motor feeder. Widely stocked as spare for power plant, chemical and data center low voltage distribution cabinet.

Working principle

The breaker continuously monitors three-phase load current via built-in CT inside PR332/P trip unit.

When overload, phase short circuit or earth leakage occurs, the electronic protection unit judges fault condition and sends trip signal to release mechanism, opening main contacts to cut off power. Spring charged mechanism provides stable closing speed independent of operator force. Optional communication module uploads current, power and fault records to SCADA system.

Onboard components

Main contact chamber, arc extinguishing grid, PR332/P-LSIG electronic trip unit, spring stored energy mechanism, manual operating handle, auxiliary contact terminal block, front status window, test button and metal plastic composite housing.

LED indicators

Front panel indicator shows ON/OFF/TRIP status; trip cause and electrical parameters are displayed on PR332/P local LCD.

Hardware self‑diagnosis

Trip unit self-checks internal electronics, CT circuit integrity. Protection settings and event records are configured via ABB Ekip Connect software.Programming softwareEkip Connect, used for protection curve setting, metering configuration, communication parameter setup and fault log download.

Electrical & Process Parameters

Model:1SDA062759R1 Brand:ABB SACE Tmax Device type:T7S 1000 molded case circuit breaker Function:Overload, short circuit and earth fault protection for low voltage distribution feeder

Mechanical & Structure

Mounting:Fixed installation inside LV distribution cabinet Protection class:IP40 (front panel) Housing:Flame retardant reinforced plastic enclosure

Environmental

Operating temperature:-25℃ ~ +70℃ Storage temperature:-40℃ ~ +85℃ Ambient humidity:5~95% non‑condensing

Certification:CE, IEC60947-2 Status:Original ABB LV distribution spare

Installation

Isolate upstream power before replacement.

Tighten front phase terminals, wire auxiliary contact and shunt trip coil if needed, download protection parameters, test manual/electric closing and each protection trip function after commissioning.

Interface

Three-phase main power terminals, auxiliary contact terminals, shunt trip/undervoltage coil terminals, communication module slot.

Diagnostic

Overload trip: Load current exceeds setting, thermal accumulation. Instantaneous trip: Solid short circuit downstream. Earth fault nuisance trip: Earth fault threshold too low, unbalanced leakage. No communication: Communication module loose or address mismatch.

Product Brief1SDA062759R1 breaker, ABB Tmax T7S 1000A LSIG molded case circuit breaker spare for LV main distribution cabinet replacement.