1SVR730824R9300, CM-PFS.S: CM-PFS.S relay: phase sequence, supply window and output checks
The ABB CM-PFS.S is a three-phase monitoring relay for phase-failure and phase-sequence detection. ABB specifies a 200–500 V AC line-to-line measuring range, two changeover outputs and a 500 ms start-up delay. The relay is powered by the measuring circuit, so the line conditions and contact logic must be reviewed together.
Key technical data
| Technical item | Verified value / selection note |
|---|---|
| Type | CM-PFS.S |
| Order code | 1SVR730824R9300 |
| Measuring supply | Three-phase 200–500 V AC, 50/60 Hz |
| Functions | Phase failure and phase-sequence monitoring |
| Output | 2 changeover contacts (2 c/o / SPDT) |
| Start-up delay | 500 ms reference |
| Terminals | Screw connection |
The table summarizes family or catalog values for identification and initial selection. Confirm the nameplate, environmental limits, standards, revision and options for the exact device before procurement or engineering approval.
Application and system selection
Use this relay where phase loss or incorrect phase order needs to initiate an alarm or interlock. Confirm whether the application needs undervoltage, unbalance or neutral monitoring, because those functions are not implied by a phase-failure/sequence model. Determine the safe state of the relay contacts and the control-system response on loss of supply.
Configuration and compatibility
CM-PFS.S uses screw terminals; related CM-PFS terminal and voltage variants may differ. Match the measured voltage, contact logic, terminal technology and environmental limits to the panel design. Do not substitute a CM-MPS or CM-PVS model without checking its measurement functions and threshold behavior.
Related models and order-code references
The following designations are related catalog references, not automatic substitutes. Check each complete code, rating, connection, revision and application requirement before selecting a variant.
No additional same-series designation was identified for this representative model in the reviewed catalog rows.
Installation and commissioning
Wire the three phases in the order shown in the ABB diagram and verify that the monitored voltage is within range. Test phase-loss and phase-sequence response with an approved simulator or controlled test method. Confirm relay contact state, alarm logic and reset/recovery behavior before connecting the output to a safety or shutdown function.
Replacement and procurement information
For a quotation or replacement review, provide the complete designation 1SVR730824R9300, CM-PFS.S, the order code where applicable, serial or hardware revision, quantity, operating environment, connected equipment and required delivery date. Include a legible nameplate image and relevant wiring, loop or switchgear drawing so the exact interface and configuration can be checked.
Ask the supplier to confirm accessories, revision compatibility and any approved successor in writing. Do not select solely from a family name or product photograph. Follow the current ABB installation and safety instructions for the exact unit.
