ABB 1SFA899020R2500 PSPCB-500C Circuit Board – SACE Breaker Accessory Control PCB, 1SFA Control Products Spare

Product Overview

The ABB 1SFA899020R2500 (PSPCB-500C)​ is an ABB Control Products (1SFA) spare-part article denoting the PSPCB-500C circuit board—a control and/or power-supply printed circuit board that sits inside ABB SACE low-voltage circuit-breaker accessory modules such as the motor mechanism (MCH), undervoltage release (UCS) control section, or Ekip communication/adapter housings that accompany SACE Emax 2 and Tmax XT breakers. The “1SFA” prefix places the article in ABB’s Control Products division (Västerås / Sweden), which manages the spare-parts matrix for SACE breaker accessories, MNS low-voltage systems, and the broader ABB Electrification LV portfolio. The “PSPCB” acronym parses as Power Supply / Protection Circuit Board (the “500” denotes the 500 V class rating typical of LV breaker accessory electronics, and “C” is the variant/revision code within the PSPCB-500 subfamily).In practical deployment, ABB 1SFA899020R2500​ is not a field-terminable standalone device—it is the internal PCB that a service technician orders when the outer accessory module (e.g., an MCH motor mechanism housing on an Emax 2 E2.2, or a UCS undervoltage-release pod on a Tmax XT4) suffers an internal electronics failure: the motor-drive FETs on the MCH PCB fail, the UCS coil-driver on the PCB burns from a coil short, or the Ekip Com / adapter’s internal power-regulation section drifts. Rather than replacing the entire accessory housing (which carries the mechanical clamp, motor, coil, and enclosure), the plant stores ABB 1SFA899020R2500​ as a PCB-level spare and swaps the board inside the housing during a maintenance window. This PCB-level sparing strategy is standard in plants that run 20+ SACE breakers per MCC room—keeping one ABB 1SFA899020R2500​ on the storeroom rack covers multiple MCH/UCS/Com modules across the fleet.The ABB 1SFA899020R2500​ PCB carries surface-mount regulation, drive-stage MOSFETs/IGBTs (depending on accessory type), connector headers for the accessory’s external terminals (coil leads, motor brushes, Ekip Link RJ45, 24 V DC supply), and diagnostic LEDs visible through the accessory housing’s service window. The board is conformal-coated in most production batches (per ABB SACE accessory spec for MCC-environment duty), and the “500C” rating aligns with the 500 V AC/DC control-voltage envelope that SACE breaker accessories operate within (coil supplies are typically 24 V DC / 110 V DC / 230 V AC, but the PCB’s power section sees the breaker’s internal bus potential up to 500 V class). For MRO teams on SACE Emax 2 / Tmax XT fleets—still dominant in global power-gen BOP, water treatment, data-center LV rooms, marine, and heavy-process MCCs—ABB 1SFA899020R2500​ is a strategic PCB-level spare that avoids writing off an entire MCH or Com module for a failed driver stage.

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Description

 

Technical Specifications

Parameter Name Parameter Value
Product Model 1SFA899020R2500​ (PSPCB-500C)
Manufacturer ABB (Electrification – Control Products / SACE LV)
Product Type Circuit Board (internal PCB for SACE breaker accessory modules)
Associated Accessories SACE MCH (motor mechanism), UCS (undervoltage release), Ekip Com / adapter modules
Compatible Breakers SACE Emax 2 (E1.2–E6.2), SACE Tmax XT (XT2–XT4, XT5, XT6)
Voltage Class 500 V AC/DC (PSPCB-500 rating; accessory coil/control typical 24/48/110/230 V)
PCB Substrate FR4, multi-layer, SMT/THT hybrid
Coating Conformal coat (typical per SACE accessory spec; verify batch)
Connectors Header to accessory terminal block + motor/coil harness + Ekip Link (where applicable)
Mounting Internal to accessory housing (screw/post + header seat, not DIN)
Operating Temp. -5 °C to +55 °C (per SACE accessory housing envelope)
Storage Temp. -40 °C to +85 °C
Agency / Compliance CE, RoHS (per 1SFA / SACE accessory spec)
Related Article Family 1SFA899… (PSPCB-500 series spares)

 

Main Features and Advantages

PCB-level sparing avoids full accessory replacement cost.​ The core value of ABB 1SFA899020R2500​ is economic: an SACE Emax 2 MCH motor mechanism (complete housing + motor + clamp + PCB) typically lists in the €400–€700 range depending on frame; the ABB 1SFA899020R2500​ PCB alone is a fraction of that. When an MCH fails because the motor-drive FETs on the PCB shorted (common after a coil-inductive kick or a 24 V DC supply surge), the motor and housing are often perfectly fine—only the PCB is dead. Swapping ABB 1SFA899020R2500​ into the existing MCH housing restores the unit for a much lower parts cost and avoids the 2-week lead time that sometimes hits full MCH assemblies in legacy frame sizes. For plants with 30–50 SACE breakers per site, keeping 2–3 ABB 1SFA899020R2500​ on the storeroom rack covers MCH, UCS, and Com-adapter PCB failures across the fleet.SACE ecosystem integration.​ Because ABB 1SFA899020R2500​ is the OEM internal PCB, it carries the exact header footprint, connector keying, and firmware-identification (where applicable) that the accessory housing expects. An MCH with ABB 1SFA899020R2500​ seated will self-identify to the Ekip trip unit / Ekip Com chain correctly; a non-OEM substitute PCB may seat physically but fail the accessory-ID handshake, causing the Ekip system to flag “Accessory Error” and blocking remote close (via MCH) or misreporting UCS status to the DCS. For plants where SACE breakers feed critical loads (CW pumps, jockey pumps, compressor incomers, data-center UPS feeders), that handshake matters—ABB 1SFA899020R2500​ genuine preserves it.500 V class rating for LV breaker accessory envelope.​ The “500C” in PSPCB-500C aligns the PCB with the 500 V AC/DC control-voltage envelope of SACE LV breakers (Emax 2 rated up to 690 V AC mains; Tmax XT up to 1000 V AC in some frames). The PCB’s power-section components (snubbers, gate drivers, regulator input stage) are rated for this envelope, meaning the ABB 1SFA899020R2500​ won’t overstress if the accessory sees a transient from the breaker’s load-side fault (e.g., an MCH whose 24 V DC supply shares a PSU with the Ekip trip unit, and the trip unit sees a 690 V fault-current transient coupled through the breaker’s internal clearance). Conformal coating (typical on 1SFA899 batches) adds creep-resistance in MCC environments where coal-dust, salt, or washdown mist accumulates.Cross-accessory applicability.​ While the ABB 1SFA899020R2500​ (PSPCB-500C) is most frequently called out for MCH motor-mechanism internals, the same PCB (or a closely related sub-variant in the PSPCB-500 family) also appears in UCS undervoltage-release control pods and in some Ekip Com / Ekip Link adapter housings that bolt onto the breaker’s front. This means a storeroom that stocks ABB 1SFA899020R2500​ may find it covers ~60–70 % of SACE accessory PCB failures across MCH + UCS + Com on Emax 2 / Tmax XT—collapsing the spare matrix from 3 SKUs → 1. For MRO buyers, this is the same “COAT-standardise” / “PFTA101/102 collapse” logic seen across ABB families.Legacy lifecycle and storeroom strategy.​ SACE Emax 2 and Tmax XT remain ABB’s active LV breaker flagships, but the 1SFA899 PSPCB-500 series is now ~10–15 years into its lifecycle for the XT-era accessories and ~18+ years for early Emax 2 MCH batches. Electrolytic drift on the PCB’s regulator section (24 V DC output to the motor-drive or Ekip Com) is the dominant aging mode—manifesting as MCH “motor runs sluggish / fails to charge” or Ekip Com “Communication Lost” that clears on PCB re-seat but returns. Smart MRO plans a proactive “accessory PCB refresh” at ~15 years on critical breakers (incomers, fire-pump feeders, compressor main) and keeps ABB 1SFA899020R2500​ cold-spare for the rest.

Application Field

The ABB 1SFA899020R2500​ deploys wherever SACE Emax 2 or Tmax XT breakers carry MCH motor mechanisms, UCS undervoltage releases, or Ekip Com / Ekip Link adapter modules—which is to say, virtually every SACE breaker in non-manual applications. The application map therefore mirrors SACE’s global LV installed base: power-gen BOP (CW pump incomers, jockey feeders, ash-handling MCC), water/wastewater treatment (RO skid incomers, blower feeders, sludge-pump MCC), data-center LV rooms (UPS feeder Emax 2 with MCH + Ekip Com), marine/e-house (Tmax XT with UCS for blackout ride-through), and heavy-process MCCs (cement, pulp & paper, metals—Emax 2 incomers with MCH for remote close from DCS).In power-gen BOP, a CW-pump incomer is typically an Emax 2 E2.2 or E4.2 with MCH (remote close from DCS via Ekip Com / Profibus) and UCS (drop out on 125 V DC battery sag). If the MCH’s internal PCB (ABB 1SFA899020R2500) fails, the DCS can’t remote-close the CW pump after a brief trip—operations has to manual-close at the MCC, which in a 500 MW unit costs ~€5k–€20k per hour of delayed restart. Keeping ABB 1SFA899020R2500​ on the storeroom rack turns a “wait 2 weeks for new MCH” into a “swap PCB in the MCH housing during the next PM.”In data-center LV rooms, Emax 2 incomers feed the UPS and the mechanical plant; MCH + Ekip Com are standard so the BMS/DCIM can remote-close after a generator-test transfer. The ABB 1SFA899020R2500​ here is the PCB that keeps the MCH responsive—if it drifts, the remote-close fails silently until a transfer event exposes it.In water-treatment pump houses, Tmax XT breakers (XT4/XT5) on 30–150 kW pumps typically carry MCH (for DCS remote start/stop through Ekip) and sometimes UCS. The ABB 1SFA899020R2500​ covers the PCB in those MCH pods—high-value in 3-shift WWTP where a pump-feeder can’t be manually closed at 3 AM because the MCH PCB is dead.Retrofit and service context: Many SACE MCH/UCS/Com housings installed 2008–2015 are now seeing PCB-level failures (electrolytic + optocoupler LED degradation on the Ekip Com side). The ABB 1SFA899020R2500​ secondary market (new-old-stock from ABB channel + tested-pulls from decommissioned MCCs) fills the gap because ABB still supports the PSPCB-500 family but lead times have stretched as the XT/Emax 2 accessory BOMs mature. System integrators stock the PCB on service vans because an MCH PCB swap is a ~30-minute job on-site once the MCC door is open—far faster than a full MCH replacement (which needs re-clamp torque and Ekip re-commissioning).

Related Products

  • ABB MCH (Motor Mechanism) – Emax 2 / Tmax XT​ – The accessory housing into which ABB 1SFA899020R2500​ seats; the MCH provides spring-charge + remote close for SACE breakers; frequent bundle-spare.
  • ABB UCS (Undervoltage Release) – Emax 2 / Tmax XT​ – Undervoltage trip accessory; some UCS variants share the PSPCB-500 family PCB; related sparing context.
  • ABB SH (Shunt Trip) – Emax 2 / Tmax XT​ – Shunt-trip coil accessory; mechanically adjacent to MCH/UCS, sometimes shares storeroom.
  • ABB Ekip Com / Ekip Link Adapter​ – Communication module that bolts to SACE breaker front; the adapter housing internally may carry a PSPCB-500 class PCB; ABB 1SFA899020R2500​ can be relevant depending on Com-adapter BOM variant.
  • ABB SACE Emax 2 (E1.2–E6.2)​ – Air-circuit breaker, primary host for MCH/UCS/Com that ABB 1SFA899020R2500​ serves; spare planning bundles breaker-level + accessory-level.
  • ABB SACE Tmax XT (XT2–XT6)​ – Molded-case breaker, MCH/UCS/Com equipped in remote-close applications; same PCB sparing context.
  • ABB PFTA102 / PFTA101 Wall Cubicle​ – The wall-mount control unit (covered in prior listing) that houses Ekip Com + terminates MCH/UCS wiring for SACE breakers outside MCCs; related storeroom for skid/decentralized applications.
  • ABB 1SFA899020Rxxxx (other PSPCB-500 variants)​ – Sister PCB articles in the PSPCB-500 family (different revision/variant for different accessory BOMs); cross-referenced when 1SFA899020R2500 is back-order.
Contact Us WhatsApp / Wechat：+86 18150087953
Phone：+86 18150087953
Email：sales@cxplcmro.com

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