ABB SCR Series Accessories: SCR-1SDA063550R1

Technical Dossier

Product Details And Specifications

ABB SCR Series: Comprehensive Module Range and Technical Overview

The ABB SCR series encompasses a broad range of accessories and auxiliary components designed for integration with ABB SACE Tmax T and Emax E series molded case and air circuit breakers. These components are deployed across global heavy industry sectors including petrochemical refineries, nuclear power auxiliary systems, offshore platforms, and large-scale manufacturing facilities. The SCR accessory line provides the mechanical and electrical interface layer that enables advanced protection, signaling, motor operation, and remote control functionality within ABB's low-voltage switchgear ecosystem. Installed base spans hundreds of thousands of panels across Europe, Asia-Pacific, and the Americas, making lifecycle support for this series a critical operational requirement for plant maintenance engineers worldwide.

The Evolution of SCR Series Architecture

The SCR accessory designation was introduced alongside ABB's SACE Tmax T1–T7 and Emax E1–E6 circuit breaker families, which entered production in the early 2000s as successors to the legacy SACE S and F series. Early SCR components were designed around mechanical trip coil and shunt release architectures compatible with IEC 60947-2 standards. As the platform matured through the 2010s, the accessory range expanded to include electronic auxiliary contacts with enhanced arc suppression, motor operators with integrated position feedback, and communication-ready modules supporting Modbus RTU and PROFIBUS DP protocols.

The transition from Tmax T to Tmax XT (introduced circa 2015) introduced dimensional changes that created partial backward compatibility constraints. SCR accessories coded for T4–T5 frames are generally not interchangeable with XT4–XT5 equivalents without mechanical adapter kits. Engineers managing mixed-generation switchgear panels must verify the exact frame generation before ordering replacement accessories. The SCR-1SDA063550R1 specifically targets the Tmax T5 / T6 frame range and remains in active production as of 2026, though long-lead procurement windows of 8–16 weeks are common for low-volume SKUs.

SCR Full Catalog & Functionalities (SKU List)

The following SKUs represent verified components within the ABB SCR accessory series, organized by functional category. Each entry reflects a distinct part number with a defined role within the SACE circuit breaker accessory ecosystem.

Auxiliary & Signaling Contacts

SCR-1SDA063550R1: Auxiliary contact block, 1NO+1NC, for Tmax T5/T6, front-mount configuration.
SCR-1SDA060216R1: Auxiliary contact 4-pole, snap-action, for Tmax T4/T5 fixed version.
SCR-1SDA060217R1: Alarm contact block, 1NO, trip indication signal output for Tmax T4/T5.
SCR-1SDA060218R1: Auxiliary contact, 2NO+2NC, extended signaling for Tmax T4/T5 withdrawable.
SCR-1SDA063551R1: Auxiliary contact block, 2NO, side-mount, Tmax T6 frame.

Shunt Trip & Undervoltage Releases

SCR-1SDA060220R1: Shunt trip release (SH), 24VDC, for Tmax T4/T5, remote trip command input.
SCR-1SDA060221R1: Shunt trip release (SH), 110–125VDC/VAC, Tmax T4/T5.
SCR-1SDA060222R1: Shunt trip release (SH), 220–240VAC, Tmax T4/T5.
SCR-1SDA060223R1: Undervoltage release (UV), 24VDC, instantaneous, Tmax T4/T5.
SCR-1SDA060224R1: Undervoltage release (UV), 110–125VAC, time-delayed 0.2s, Tmax T4/T5.

Motor Operators

SCR-1SDA060230R1: Motor operator (MOE), 24VDC, for Tmax T4/T5 fixed, remote open/close.
SCR-1SDA060231R1: Motor operator (MOE), 110–125VAC, Tmax T4/T5, with position feedback contacts.
SCR-1SDA060232R1: Motor operator (MOE), 220–240VAC, Tmax T5/T6, heavy-duty cycle rating.

Locking & Mechanical Accessories

SCR-1SDA060240R1: Padlock device kit, door-interlock type, for Tmax T4–T6 fixed installation.
SCR-1SDA060241R1: Rotary handle kit, IP65 rated, extended shaft, for Tmax T5/T6 panel-door mounting.
SCR-1SDA060242R1: Terminal shield set, insulated, for Tmax T5 3-pole and 4-pole configurations.

Sourcing Hard-to-Find & Obsolete SCR Series Parts

DriveKNMS maintains a dedicated inventory program for ABB SCR series accessories across the full Tmax T1–T7 and Emax E1–E6 compatibility matrix. For plant operators running switchgear panels manufactured between 2003 and 2018, certain low-volume SCR accessories have transitioned to extended lead-time or limited-availability status through standard distribution channels. DriveKNMS sources these components through authorized secondary market channels, factory surplus programs, and verified OEM-equivalent suppliers, with full traceability documentation provided on request.

All sourced SCR accessories are supplied with original manufacturer packaging where available, or with DriveKNMS inspection certification for surplus stock. Minimum order quantities are flexible, supporting single-unit emergency replacement orders as well as bulk procurement for scheduled maintenance shutdowns. Typical dispatch for in-stock items is 1–3 business days; for sourced items, lead times are confirmed at order placement.

Quality Control for the SCR Series Range

ABB SCR series accessories involve precision mechanical interfaces and low-level electrical signaling circuits that require targeted verification procedures beyond standard continuity checks. DriveKNMS applies the following test protocol to all SCR accessories prior to dispatch:

Auxiliary and alarm contact blocks are tested for contact resistance (target <10mΩ per pole), mechanical actuation force, and rated insulation voltage (500VDC Megger test). Shunt trip and undervoltage releases are bench-tested at rated voltage and at ±15% voltage tolerance limits to verify reliable operation across the full specified range. Motor operators undergo full open/close cycle testing under rated load with position feedback contact verification. Mechanical accessories including padlock kits and rotary handles are inspected for dimensional conformance against ABB frame-specific tolerances.

All test results are logged and available as part of the shipment documentation package upon request.