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Description
Application ScenariosAt a 132/33 kV bulk supply substation undergoing a protection relay upgrade from electromechanical to ABB RER615 digital relays, the engineering team discovered that the existing marshalling端子 (terminal) blocks for breaker auxiliary contacts and local trip/test pushbuttons were a rat’s nest of undocumented cross-wiring. By standardizing on the 1MRK000173-CCR00 as the binary I/O slice inside each bay control cubicle, they consolidated 8 breaker-position contacts (DI) and 12 tripping/indication relays (DO) onto a single PCB that snaps into the REC670 backplane. When a 33 kV feeder developed a phase-to-phase fault during storm season, the 1MRK000173-CCR00 cleanly captured the breaker “CB open” auxiliary contact transition and drove the trip LED + remote SCADA bit without the signal bounce that had plagued the old screw-terminal wiring. The protection engineer’s post-commissioning note read: “The 1MRK000173-CCR00 didn’t just replace terminals—it gave us channel-level visibility we never had with copper-and-screws.” For bay panels where a missed auxiliary contact can delay fault clearance by cycles, that clarity matters.
Parameter
| Main Parameters | Value/Description |
|---|---|
| Product Model | 1MRK000173-CCR00 |
| Manufacturer | ABB |
| Product Category | Binary Input/Output Module (Bay Control I/O) |
| Digital Inputs | 8 channels |
| Digital Outputs | 12 channels (10 standard + 2 additional relay outputs) |
| Operating Voltage | 24–30 VDC (RL24 variant family) |
| Current Rating | 50 mA per channel (typical) |
| Isolation Voltage | 1500 V RMS (channel-to-channel / channel-to-ground) |
| Dimensions (L×W×H) | Approx. 370 mm × 74 mm × 361 mm |
| Weight | Approx. 0.47 kg |
| Origin | Switzerland / Sweden (ABB) |
| Mounting | REC670 / bay control chassis slot (backplane bus) |
Technical Principles and Innovative Values
- Innovation Point 1: 8DI + 12DO Density in a Single Bay-Slot PCB. The 1MRK000173-CCR00 packs a complete binary marshalling function—breaker aux contacts, trip/test pushes, local indicators—into one module that occupies a single slot in the REC670 chassis. Compared to loose relays and terminal strips, this halves panel wiring points and eliminates the “which wire goes where” scavenger hunt during outages.
- Innovation Point 2: MOV-Protected Variants for Surge Immunity. In the -CCR00 family lineage (adjacent to -GC/-AD/-BD etc. voltage variants), MOV (metal-oxide varistor) protection across inputs and relay coils suppresses switching transients from nearby CT/VT circuits and lightning-induced surges on control cables—a substation-specific hazard generic PLC I/O isn’t built to handle.
- Innovation Point 3: 1500 V RMS Channel Isolation. The 1MRK000173-CCR00 provides reinforced isolation between channels and to ground, critical when mixing 24 V DC control with adjacent 110 V DC tripping supplies or when the same cubicle houses both DC and AC auxiliary circuits. This isolation prevents ground-loop-induced nuisance trips that can cascade across bays.
- Innovation Point 4: PCM600-Compatible Configuration. Like all REC670/RER615-family I/O, the 1MRK000173-CCR00 is configured through ABB’s PCM600 engineering tool rather than DIP switches or hardcoded wiring. Channel labeling, debounce times, and output pulse widths are software-defined, making bay-to-bay replication a matter of downloading a config file instead of rewiring.
Application Cases and Industry ValueA regional utility in Northern Europe standardized ABB 1MRK000173-CCR00 modules across 14 secondary-substation bays during a three-year RER615 rollout replacing 1990s electromechanical relays. Each bay used one 1MRK000173-CCR00 to handle 8 DI (breaker position, disconnector positions, 86-lockout status) and 12 DO (trip, close, local alarm, SCADA LEDs). Because the -CCR00 slots directly into the REC670 backplane, the utility eliminated roughly 120 terminal-block points per bay—translating to ~6 hours saved in commissioning labor per bay, and a measurable drop in wiring-error callbacks. After two years in service, the utility reported zero I/O-module-related protection failures across the fleet, even through a harsh winter with multiple consecutive lightning storms. The protection manager noted: “The 1MRK000173-CCR00 is one of those parts you forget is there—which in substations is the highest compliment.”Related Product Combination SolutionsBuild a complete ABB bay control & protection node around the 1MRK000173-CCR00 with these companion models:
- REC670: The bay control host unit—the 1MRK000173-CCR00 plugs into its backplane as the binary I/O slice; handles protection, control, and IEC 61850 GOOSE.
- RER615: Feeder/distance protection relay often deployed alongside the 1MRK000173-CCR00 in 110 kV and below bays.
- REF542plus: Compact bay control relay (10–35 kV segment); the 1MRK000173-CCR00‘s sibling modules (BE/CE/CF variants) are also listed under REF542plus I/O selection tables.
- 1MRK000173-BE: 110–125 VDC variant of the same 8DI+12DO module—use when the bay’s DC supply is 110 V instead of 24 V; direct swap with firmware-compatible config.
- 1MRK000173-CF: 220–250 VDC / 110 mA heavy-duty variant for high-voltage bay tripping circuits where 50 mA isn’t enough.
- 1MRK000284-AB (MIM): 6-channel analog input module—pair with 1MRK000173-CCR00 when the bay also needs DC transducer or battery voltage monitoring.
- PCM600: ABB’s engineering & configuration tool—required to parameterize the 1MRK000173-CCR00 channel behavior, debounce, and output pulse timing.
