ABB 1SVR730841R0300 Current Monitoring Relay - CE/UL
Part Number: 1SVR730841R0300
Quick Summary
Current Monitoring Relay is a compact protection device designed for single-phase circuits in industrial automation. The CM-SRS.12S from ABB delivers reliable under- or overcurrent monitoring with a 110-130 V AC control supply and a single SPDT output, enabling simple integration into control logic. Engineers often struggle with incorrect tripping or nuisance alarms caused by inadequate hysteresis; this relay offers adjustable hysteresis from 3 to 30 percent of the threshold and a sealable cover to prevent unauthorized changes. With IP50 housing and rugged DIN-rail mounting, it meets demanding plant environments while maintaining safe clearances. Certifications such as CE conformity and UL/CSA listings support compliance across global facilities, while compact dimensions simplify panel design and reduce enclosure footprint. This combination reduces downtime and improves asset protection while keeping installation costs predictable.
Product Information
Extended Description
1SVR730841R0300 ABB: The CM-SRS.12S is a single-functional current monitoring relay from the CM single-phase monitors range. This monitoring relay operates with a rated control supply voltage of 110 - 130 V AC and has a 1 c/o (SPDT) output contact rated at 250 V / 4 A. It provides a RMS measuring principle for DC and AC currents with 3 measuring ranges: 0.3-1.5 A, 1-5 A and 3-15 A and works according to the open-circuit principle. The CM-SRS.12S is configurable for over- or undercurrent monitoring, the hysteresis is adjustable within a range of 3 to 30 % of the threshold value. 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
4016779852296
Minimum Order Quantity
1 piece
Customs Tariff Number
85364900
Data Sheet, Technical Information
Data sheet - CM-SRS.1P; CM-SRS.1S Current monitoring relays, single-phase AC/DC
Instructions and Manuals
Instruction Sheet / Manual - CM-SxS Single-phase current monitoring relays | Installation instructions - CM-SxS Single-phase current 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
0.168 kg
Function
Over- or undercurrent monitoring
Measuring Range
0.3 ... 1.5 A | 1 ... 5 A | 3 ... 15 A
Rated Control Supply Voltage (Us)
110 ... 130 V AC
Output
1 c/o (SPDT) contact
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)
Measuring Circuit / Output Circuit 6 kV | Output Circuit 1 / Output Circuit 2 4 kV | Supply Circuit / Measuring Circuit 6 kV | Supply Circuit / Output Circuit 4 kV
Rated Insulation Voltage (Ui)
Measuring Circuit / Output Circuit 600 V | Output Circuit 1 / Output Circuit 2 250 V | Supply Circuit / Measuring Circuit 600 V | Supply Circuit / Output Circuit 250 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 -20 ... +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
Toxic Substances Control Act - TSCA
Toxic Substances Control Act (TSCA) declaration for Electronic Relays and Controls
CB Certificate
CB_DK-28255-UL
CQC Certificate
CQC Certificate, Relays, CM-SRS.., CM-SFS.., CM-ESS..,CM-EFS.., CM-TCS.., Made in Germany
cULus Certificate
cULus508_20120203-E140448
Declaration of Conformity - CCC
CCC Certificate, Relays, CM-SRS.., CM-SFS.., CM-ESS..,CM-EFS.., CM-TCS.., Made in Germany
Declaration of Conformity - CE
EU Declaration of Conformity - CM-ExS.xxx, CM-SxS.xxx Single-phase current and voltage monitoring relays
Declaration of Conformity - UKCA
UK Declaration of Conformity - CM-ExS.xxx, CM-SxS.xxx Single-phase current and voltage monitoring relays
DNV GL Certificate
DNV Certificate - Current monitoring relays CM-SFS.x and CM-SRS.x with screw or push-in terminals
EAC Certificate
EAC Certificate - Measuring and monitoring relays CM-xxS.xxx and CM-xxN.xxx range in the new housing
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
0.19 kg
Package Level 1 EAN
4016779852296
Object Classification Code
B
ETIM 7
EC001440 - Current monitoring relay
ETIM 8
EC001440 - Current monitoring relay
ETIM 9
EC001440 - Current monitoring relay
eClass
V11.0 : 27371802
UNSPSC
39122332
E-Number (Finland)
2712307
E-Number (Norway)
4188054
E-Number (Sweden)
3860632
The CM-SRS.12S delivers 110-130 VAC control supply to minimize wiring complexity and support straightforward integration into existing control schemes, delivering a measurable reduction in installation time and wiring errors. In practice, the 0.3-1.5A, 1-5A and 3-15A measuring ranges enable precise protection for a wide range of single-phase loads, improving motor protection and preventing nuisance trips in variable-load applications. The adjustable hysteresis of 3-30% of threshold value reduces false trips in fluctuating systems, delivering stable operation in conveyors, pumps, and fans. The SPDT 1 c/o output provides clean, isolated signaling for alarms or interlocks, while the open-circuit monitoring principle ensures reliable detection without parasitic current paths. DIN rail mounting TH35-15/TH35-7.5 and screw terminal connections simplify installation and maintenance in control panels. The IP50 housing and compact footprint support dense panel designs, with dimensions of 22.5 mm width, 85.6 mm height, and 103.7 mm depth, making retrofits and upgrades straightforward. Robust electrical and mechanical durability—AC-12 100000 cycles and 30000000 mechanical cycles—helps lower lifecycle costs in demanding environments. Compatibility with ABB CM-SRS family and standard safety practices ensures a smooth integration into new or existing automation architectures, delivering reliable protection with predictable total cost of ownership.
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FAQs
The CM-SRS.12S is designed for DIN rail mounting on TH35-15 or TH35-7.5 profiles, with mounting positions 1 through 6. It also features screw terminals for flexible wiring and accepts both rigid and flexible conductors, simplifying retrofits and new installations in compact control panels.
It operates from a 110-130 V AC control supply and monitors currents in three ranges: 0.3-1.5 A, 1-5 A, and 3-15 A. The device provides a single SPDT output (1 c/o) capable of switching at least 24 V and 10 mA, with ratings for AC and DC operation listed to guide contact selection and protection schemes.
Yes. Its open-circuit current monitoring with adjustable hysteresis (3-30% of threshold) helps prevent nuisance trips on motors and pumps. The unit’s robust insulation, IP50 housing, and UL/CSA/CE certifications make it suitable for integration into motor control centers and machine protection schemes in ABB-driven automation architectures.
The CM-SRS.12S carries CE conformity, UL/CSA listings, CB certificate, and CCC documentation, with RoHS compliance stated. These certifications support regulatory compliance across global facilities, enabling safer deployment in industrial environments and facilitating procurement approvals for regulated projects.
Key maintenance benefits include screw-terminal connections for reliable terminations, a sealable cover to prevent tampering, and durable construction rated for up to AC-12 100000 cycles. Its compact DIN-rail form factor reduces panel space, while clear electrical ratings and hysteresis settings reduce downtime and support predictable ROI over the system lifetime.