ABB CM-PSS.31S Three-phase monitoring relay - CE/UKCA
Part Number: 1SVR730784R2300
Quick Summary
ABB CM-PSS.31S Three-phase monitoring relay provides precise phase failure and voltage monitoring for electrical switchgear and motors. In many installations, undetected phase issues trigger unplanned downtime and motor damage before alarms. This device carries CE and UKCA marks for global compliance, and UL/CSA safety listings, with IP50 housing suitable for control panels in demanding environments. The compact, DIN-rail mounted unit uses screw terminals for reliable wiring, delivering improved reliability, reduced maintenance costs, and easier compliance with IEC/EN standards. With phase sequence monitoring and adjustable tripping delays, it supports safer, more predictable plant operation and helps optimize uptime in industrial automation projects.
Product Information
Extended Description
1SVR730784R2300 ABB: The CM-PSS.31S relay is from the CM three-phase monitors range. This relay operates with a rated control supply voltage / three-phase measuring voltage of 380 V AC and has a 2 c/o output with contacts rated at 250 V / 4 A. The CM-PSS.31S monitors the phase parameters over/undervoltage and phase failure. Phase sequence monitoring as well as an ON or OFF tripping delay are selectable. The tripping delay is adjustable over a range of instantaneous to 30 s (0, 0.1-30 s). A sealable transparent cover for protection against unauthorized changes is available as accessory. The device offers screw connection technology with double-chamber cage connection terminals.
EAN
4016779851817
Minimum Order Quantity
1 piece
Customs Tariff Number
85364900
Data Sheet, Technical Information
Data sheet - CM-PSS.31; CM-PSS.41 Three-phase monitoring relays with screw or push-in terminals
Instructions and Manuals
Instruction Sheet / Manual - CM-MPx, CM-PxS Three-phase monitoring relays | Installation instructions - CM-MPx, CM-PxS Three-phase monitoring relays
CAD Dimensional Drawing
Information - 2D and 3D files for CAD systems
Product Net Width
22.5 mm
Product Net Height
85.6 mm
Product Net Depth / Length
103.7 mm
Product Net Weight
0.132 kg
Function
Phase failure detection | Phase sequence monitoring | Over- and undervoltage monitoring
Measuring Range
(L-L) 342 ... 418 V AC
Time Range
200 ms start-up delay | 0 s or 0.1 ... 30 s tripping delay (ON or OFF)
Rated Control Supply Voltage (Us)
(L-L) 380 V AC
Rated Frequency (f)
Supply Circuit 50/60 Hz
Output
2 c/o (SPDT) contacts
Terminal Type
Screw Terminals
Rated Operational Current AC-12 (Ie)
(230 V) 4 A
Rated Operational Current AC-15 (Ie)
(230 V) 3 A
Rated Operational Current DC-12 (Ie)
(24 V) 4 A
Rated Operational Current DC-13 (Ie)
(24 V) 2 A
Minimum Switching Capacity
24 V | 10 mA
Rated Impulse Withstand Voltage (Uimp)
Input Circuit 6 kV | Output Circuit 4 kV
Rated Insulation Voltage (Ui)
Input Circuit / Output Circuit 600 V | Output Circuit 1 / Output Circuit 2 300 V
Degree of Protection
Housing IP50 | Terminals IP20
Overvoltage Category
III
Pollution Degree
3
Short-Circuit Protective Devices
Output Circuit NC - F Type Fuses 6 A | Output Circuit NO - F Type Fuses 10 A
Electrical Durability
AC-12 100000 cycle
Mechanical Durability
Nr. Operations 30000000 cycle
Connecting Capacity
Flexible with Ferrule 1x 0.5 ... 2.5 mm² | Flexible with Ferrule 2x 0.5 ... 1.5 mm² | Flexible with Insulated Ferrule 1x 0.5 ... 2.5 mm² | Flexible with Insulated Ferrule 2x 0.5 ... 1.5 mm² | Flexible 1x 0.5 ... 2.5 mm² | Flexible 2x 0.5 ... 1.5 mm² | Rigid 1x 0.5 ... 4 mm² | Rigid 2x 0.5 ... 2.5 mm²
Tightening Torque
0.6 ... 0.8 N·m
Wire Stripping Length
8 mm
Recommended Screw Driver
0.8 x 4 | 4.5 | Pozidriv 1
Mounting Position
1 ... 6
Mounting on DIN Rail
TH35-15 (35 x 15 mm Mounting Rail) acc. to IEC 60715 | TH35-7.5 (35 x 7.5 mm Mounting Rail) acc. to IEC 60715
Standards
CAN/CSA C22.2 No.14 | IEC/EN 63000 | IEC/EN 60255-27 | IEC/EN 61000-6-2 | IEC/EN 61000-6-3 | UL 508
Maximum Operating Voltage UL/CSA
Output Circuit 300 V AC
Contact Rating UL/CSA
B300
Connecting Capacity UL/CSA
Flexible 1x 18-14 AWG | Flexible 2x 18-16 AWG | Rigid 1x 20-12 AWG | Rigid 2x 20-14 AWG
Tightening Torque UL/CSA
7.08 in·lb
Pilot Duty UL/CSA
B300
Flammability According to UL94
V-0
Ambient Air Temperature
Operation -25 ... +60 °C | Storage -40 ... +85 °C
Maximum Operating Altitude Permissible
Without Derating 2000 m
Conflict Minerals Reporting Template (CMRT)
CMRT - Conflict Minerals Reporting Template
REACH Declaration
REACh Info for Electronic Relays and Controls
RoHS Information
RoHS Declaration of conformity for Electronic Relays and Controls
RoHS Status
Following EU Directive 2011/65/EU and Amendment 2015/863 July 22, 2019
SCIP
7efeb442-378f-49ac-8110-ac8609db9075 Germany (DE)
Simplified SCIP
3e699c1e-b164-4386-8d53-f34ab5b48dba Poland (PL) | 1df37d64-a162-47d1-abbb-333bf9acd7fc Finland (FI) | 1227a56e-ccd7-404c-a456-e5230f18ba18 Germany (DE) | d3c733c5-d558-4807-83e3-232cdaa521e7 Belgium (BE) | 5f38e74b-54b7-4954-adbf-1c5c7e575dd7 Denmark (DK) | 4009aee7-d05f-41a6-a9ee-40915a4d2cb1 Norway (NO) | fcae1ff5-0436-4d4e-91b5-e6fd104d075a Italy (IT) | 16d30a0e-04c4-4b92-815b-7d77c4cbba12 Germany (DE) | 99106936-2541-4888-b048-c537c7545ceb Bulgaria (BG) | 6d844f64-7173-4790-936f-9e7f221bb07f Portugal (PT) | 5f182b33-355b-4746-8e4c-d32228c7212a Greece (GR) | ad06c230-779e-49f3-a644-b069d5733c7c Netherlands (NL) | 0a4d8874-3a1d-4fe3-abe4-ff9dbc145782 Hungary (HU) | 3c1b9b75-7cbb-4157-bb0a-0c0ec90e9cbf Germany (DE) | a50e3321-c7d5-4300-a1e7-fa015713da2c Czech Republic (CZ) | 01506c4d-3d00-4101-8d2d-8f0e093b15c6 Estonia (EE) | 341c6ba2-6da8-49ae-88f4-f090285cc5b7 Poland (PL) | 710f4120-d6fb-49a1-814a-b9f4f2a66089 Croatia (HR) | 3c571a36-952b-4fcd-800d-064d8e71710d Spain (ES) | bdd2650d-b2f2-47d6-bd8d-1b8c7af3c81c Belgium (BE) | ada78d65-3f73-471a-854d-8173044dbdd8 France (FR) | f13f0cfb-fbd8-41cd-8803-ca8fe8631ea0 Hungary (HU) | d2a63e5d-4b7b-4a35-8da8-3b57a1256ca9 France (FR) | d3093261-24e7-4405-aa40-f4b4999c9bab Sweden (SE) | 82f93a25-b351-40bf-aae5-820e9c72500d Germany (DE) | 21fe8c7b-d836-427f-8961-18bc8daefb8e Poland (PL) | 902c233c-548b-411c-a861-ad3c601091c0 Sweden (SE)
Toxic Substances Control Act - TSCA
Toxic Substances Control Act (TSCA) declaration for Electronic Relays and Controls
CQC Certificate
CQC Certificate, Electronic Measuring and Monitoring Relays, CM-MPS.., CM-PVS.., CM-PSS..,CM-PAS.., CM-UFS.., CM-MPN.., Made in Germany
cULus Certificate
cULus508_20120829-E140448
Declaration of Conformity - CCC
CCC Certificate, Electronic Measuring and Monitoring Relays, CM-MPS.., CM-PVS.., CM-PSS..,CM-PAS.., CM-MPN.., Made in Germany
Declaration of Conformity - CE
EU Declaration of Conformity - CM-xxS.xxx, CM-xxN.xxx Three-phase monitoring relays
Declaration of Conformity - UKCA
UK Declaration of Conformity - CM-xxS.xxx, CM-xxN.xxx Three-phase monitoring relays
DNV GL Certificate
DNV GL Certificate - CM-MPx.xxx, CM-PAS.xxx, CM-PSS.xxx,CM-PVS.xxx, and CM-PFS.x Three-phase monitoring relays with screw or push-in terminals
Package Level 1 Units
box 1 piece
Package Level 1 Width
97 mm
Package Level 1 Depth / Length
30 mm
Package Level 1 Height
109 mm
Package Level 1 Gross Weight
0.157 kg
Package Level 1 EAN
4016779851817
Object Classification Code
B
ETIM 7
EC001441 - Phase monitoring relay
ETIM 8
EC001441 - Phase monitoring relay
ETIM 9
EC001441 - Phase monitoring relay
eClass
V11.0 : 27371803
UNSPSC
39122332
E-Number (Finland)
2712288
E-Number (Norway)
4188096
E-Number (Sweden)
3860581
Feature: 380 V AC rated control supply and measuring voltage range (L-L) 342–418 V AC. Business Impact: ensures compatibility with European three-phase networks and reduces the need for extra transformers. Application: control panels and protective relays in machines and conveyors. The CM-PSS.31S fits compact DIN rail installations while delivering reliable phase monitoring in a tight footprint. Feature: 2 c/o SPDT output with screw terminals. Business Impact: simplifies wiring and integration into existing control circuits, lowering wiring error risk. Application: motor protection, alarm signaling, and interlock logic in switchgear. Feature: Time range with 200 ms start-up delay and ON or OFF tripping delay (0 s or 0.1–30 s). Business Impact: allows tuning to system dynamics, reducing nuisance trips and enabling coordinated protection. Application: pumping stations, fans, and lifting equipment. Feature: Comprehensive monitoring (phase failure, over/undervoltage, phase sequence). Business Impact: provides early fault detection and coordinated trip signals, improving safety and process reliability. Application: industrial motor control centers and panel boards. Feature: Robust mechanical and electrical durability (AC-12 100000 cycles; 30,000,000 mechanical cycles). Business Impact: lowers maintenance costs and extends service life in harsh environments. Application: DC/AC control circuits across manufacturing lines. Feature: DIN rail mounting TH35 and TH35-15/7.5 options with 22.5 mm width, 85.6 mm height, 103.7 mm depth. Business Impact: fast, standardized installation with consistent spacing and accessibility. Application: modern control cabinets and panel assemblies.
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FAQs
Install the CM-PSS.31S on a TH35 DIN rail (TH35-15 or TH35-7.5). Use screw terminals for wire connections, with flexible or rigid conductors sized per the specification. Tighten to 0.6–0.8 N·m and strip 8 mm of insulation. Ensure a 380 V AC control supply is present and connect the two SPDT outputs to the control circuit to drive the protected load.
The relay operates from a rated control supply of 380 V AC and measures (L-L) 342–418 V AC. It provides 2 SPDT contacts, with a measuring range matching standard 3-phase power networks. Time characteristics include a 200 ms start-up delay and a selectable tripping delay of 0 s or 0.1–30 s, supporting ON or OFF delay configurations.
Yes. CM-PSS.31S monitors phase failure, phase sequence, and over/undervoltage, enabling safe motor control and protection. Its two SPDT outputs can trip or signal protective circuits, helping to prevent costly motor damage and unplanned downtime in conveyors, pumps, and fans.
CM-PSS.31S carries CE and UKCA marks, with UL/CSA safety listings and UL 508 compatibility. It also complies with IEC/EN standards for monitoring relays and connects safely to control panels in EU and North American markets, supported by RoHS and REACH declarations.
The device’s high electrical and mechanical durability reduces replacement intervals (AC-12 100000 cycles, 30,000,000 mechanical cycles). By preventing phase faults and reducing nuisance trips, it minimizes downtime, lowers maintenance costs, and improves overall line reliability in industrial automation environments.