Jun172026
MVAJ23B1AB0757B

ALSTHOM MVAJ23B1AB0757B | MVAJ23 High Burden Draw-out Trip Relay MV Substation Circuit Breaker Interlock – Field Service Notes

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Component Snapshot At-a-Glance Model: MVAJ23B1AB0757B Manufacturer: GEC ALSTHOM (later AREVA, now GE Vernova Grid) Alt P/N: MVAJ23R1AB0505F (low burden coil variant, coil impedance incompatible); MVAJ10 series (smaller contact count, cannot substitute multi-interlock schemes) Product Series: MVAJ 20-series hinged armature trip/auxiliary relay, Midos draw-out rack form factor Hardware Type: Draw-out plug-in mechanical tripping lockout relay, yellow…

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Jun172026
MCGG52H1CB0753C

ALSTHOM MCGG52H1CB0753C | MCGG52 Series IDMT Overcurrent & Earth Fault Protection Relay Power Plant Feeder Motor Protection – Field Service Notes

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Component Snapshot At-a-Glance Model: MCGG52H1CB0753C Manufacturer: GEC ALSTHOM (Later acquired by Schneider Electric) Alt P/N: MCGG22D1CB0753C (Low-set only, no instantaneous high-set); MCGG62N1CB0753F (Extended curve variant, pinout incompatible) Product Series: MCGG (Microprocessor Controlled Generalized Gear) numerical protection relay series Hardware Type: Draw-out rack-mount numerical overcurrent & earth fault protection relay, full withdrawable plug-in chassis Key Feature:…

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Jun172026
DSAI130D

ABB DSAI130D 3BSE006513R1 | 8CH Isolated 4-20mA Analog Input Module S800 I/O AC800M 800xA – Field Service Notes

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Component Snapshot At-a-Glance Model: DSAI130D, factory P/N 3BSE006513R1 Alt. P/N: DSAI130 (non-HART older revision, limited diagnostic capability); DSAI143 (16-channel non-isolated AI, cannot substitute) Product Series: ABB S800 I/O, AC 800M / 800xA DCS & SIL capable SIS auxiliary monitoring Hardware Type: Hot-swappable rack plug-in 8-channel analog input module, mates with S800 TU830/TU831 terminal baseplates Key…

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Jun172026
DSDI110AV1

ABB DSDI110AV1 3BSE018295R1 | 16CH Wetting Voltage Digital Input Module S800 I/O AC800M 800xA – Field Service Notes

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Component Snapshot At-a-Glance Model: DSDI110AV1, factory P/N 3BSE018295R1 Alt. P/N: DSDI110V1 (no internal wetting supply, external 24V required); DSDI110A (Advant S100 legacy 32CH DI, rack/backplane incompatible) Product Series: ABB S800 I/O, AC 800M / 800xA DCS & SIS control system Hardware Type: Rack plug-in 16-channel wetting digital input module, hot-swap compatible with S800 I/O unit…

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Jun172026
DSQC355A

ABB DSQC355A | Robot Serial Measurement Board SMB Unit For IRC5 Controller – Field Service Notes

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Component Snapshot At-a-Glance Model: DSQC355A Alt. P/N: DSQC355 (older non-A revision, pinout partial mismatch; DSQC355B upgraded version with improved EMI filtering) Product Series: ABB IRC5 Robot Controller, Serial Measurement Bus (SMB) architecture Hardware Type: Rack-mount SMB serial measurement board, hot-swap compatible inside IRC5 main cabinet Key Feature: Reads absolute serial encoder data from robot servo…

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Jun172026

ABB SK827005 | 480V 60Hz AC Contactor Magnet Coil For EH550 Power Contactor – Field Service Notes

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Component Snapshot At-a-Glance Model: SK827005 Alt. P/N: SK827100-AS (24VDC DC coil variant, pinout incompatible); SK827004 (400VAC coil, voltage mismatch) Product Series: ABB EH550 high-power AC contactor, generator excitation & MCC power switching equipment Hardware Type: Molded insulated AC operating magnet coil, plug-in direct replacement for EH550 contactor core Key Feature: Factory integrated surge suppression circuit,…

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Jun172026
TB850

ABB TB850 3BSC950193R1 | CEX Bus DB25 Male Terminator AC 800M 800xA DCS – Field Service Notes

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Component Snapshot At-a-Glance Model: TB850, full part number 3BSC950193R1 Alt. P/N: TB851 (DB25 female CEX terminator, incompatible pinout); no functional substitute from third-party brands Product Series: ABB AC 800M / 800xA DCS & SIS, CEX (Controller Extension) Bus communication architecture Hardware Type: Passive unpowered bus termination plug, industrial plastic housing, screw-locked DB25P male connector Key…

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Jun172026
ABB SM811K01

ABB SM811K01 3BSE018173R1 | SIL3 Safety Logic Controller Module AC 800M S800 I/O – Field Service Notes

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Component Snapshot At-a-Glance Model: SM811K01, Full Order P/N: 3BSE018173R1 Alt. P/N: SM812K01 (RoHS compliant newer generation replacement, pinout/CEX bus compatible, mandatory for new builds); No cross-substitute with standard PM8xx control CPUs Product Series: ABB AC 800M / 800xA SIS Safety System, S800 I/O, CEX Bus architecture Hardware Type: Rack-mount SIL3 safety CPU module, hot-swap capable,…

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Jun162026
CC-TCF901

Honeywell CC-TCF901 | CF9 Control Firewall IOTA Termination Base for CC-PCF901 FTE Module Experion PKS Series C – Field Service Notes

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Component Snapshot At-a-Glance Model: CC-TCF901, factory P/N 51403427-175 Alt. P/N: DC- (conformal coated offshore variant, same pinout; CC-HCN911 horizontal FTE hub base, incompatible CF9 hardware) Product Series: Honeywell Experion PKS Series C FTE Fault Tolerant Ethernet cabinet hardware, matched to CC-PCF901 CF9 firewall module Hardware Type: Passive rack-mount CF9 dedicated IOTA termination base, hot-swap compatible…

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Jun162026
CC-PCF901

Honeywell CC-PCF901 | CF9 9-Port FTE Control Firewall Module Experion PKS Series C C300 – Field Service Notes

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Component Snapshot At-a-Glance Model: CC-PCF901, factory P/N 51405047-175 Alt. P/N: No direct cross-substitute; standard IT switches cannot replace CF9 control firewall functionality Product Series: Honeywell Experion PKS Series C FTE Fault Tolerant Ethernet platform, paired with C300 FTE controllers Hardware Type: Rack-mount 9-port hardened control firewall/FTE distribution module, hot-swap capable, mounts exclusively to CC-TCF901 CF9…

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