ABB 1SVR740830R0500 Voltage Monitor Relay - SPDT 24-240V
Part Number: 1SVR740830R0500
Quick Summary
Voltage monitoring relay CM-ESS.MP provides reliable single-phase protection for industrial power systems. Engineers often grapple with nuisance trips caused by voltage fluctuations, downtime, and costly maintenance. This ABB device carries CE conformity, UL/CSA listings, and CB certification, giving confidence across European and North American sites, while its IP50 housing protects the electronics in typical panel environments. The unit operates from 24 to 240 V AC/DC and features a 2 c/o SPDT output, enabling flexible control logic. With four measuring ranges and adjustable hysteresis and delays, it adapts to varying supply conditions, reducing false trips. Easy Connect push-in terminals simplify wiring and field upgrades, delivering faster commissioning and long-term reliability.
Product Information
Extended Description
1SVR740830R0500 ABB: The CM-ESS.MP is a multifunctional voltage monitoring relay from the CM single-phase monitors range. This monitoring relay operates with a rated control supply voltage of 24 - 240 V AC / DC and has a 2 c/o (SPDT) output with contacts rated at 250 V / 4 A. It provides a RMS measuring principle for DC and AC voltages with 4 measuring ranges: 3-30 V, 6-60 V, 30-300 V and 60-600 V. The CM-ESS.MP offers selection of over- or undervoltage monitoring, open- or closed-circuit operating principle, with or without latching function. The hysteresis is adjustable within a range of 3 to 30 % of the threshold value. The tripping delay and the start-up delay are 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 maintenance free Easy Connect Technology with push-in terminals.
EAN
4016779852418
Minimum Order Quantity
1 piece
Customs Tariff Number
85364900
Data Sheet, Technical Information
Data sheet - CM-ESS.MP; CM-ESS.MS Multifunctional voltage monitoring relay, single-phase AC/DC
Instructions and Manuals
Instruction Sheet / Manual - CM-ExS Single-phase voltage monitoring relays | Installation instructions - CM-ExS Single-phase voltage 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
0.143 kg
Function
Over- or undervoltage monitoring
Measuring Range
3 ... 30 V | 6 ... 60 V | 30 ... 300 V | 60 ... 600 V
Time Range
0 s or 0.1 ... 30 s tripping delay (ON)
Rated Control Supply Voltage (Us)
24 ... 240 V AC/DC
Output
2 c/o (SPDT) contact; operating principle selectable
Terminal Type
Screwless 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 10 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 2x 0.5 ... 1.5 mm² | Flexible with Insulated Ferrule 2x 0.5 ... 1.5 mm² | Flexible 2x 0.5 ... 1.5 mm² | Rigid 2x 0.5 ... 1.5 mm²
Wire Stripping Length
8 mm
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 2x 18-16 AWG | Rigid 2x 20-16 AWG
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
DVN Certificate - Voltage monitoring relays CM-EFS.x and CM-ESS.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
0.165 kg
Package Level 1 EAN
4016779852418
Object Classification Code
B
ETIM 7
EC001438 - Voltage monitoring relay
ETIM 8
EC001438 - Voltage monitoring relay
ETIM 9
EC001438 - Voltage monitoring relay
eClass
V11.0 : 27371801
UNSPSC
39122332
E-Number (Finland)
2712253
E-Number (Norway)
4188091
E-Number (Sweden)
3860643
CM-ESS.MP is a multifunctional voltage monitoring relay that accepts 24–240 V AC/DC and performs over- or undervoltage monitoring for single‑phase systems. The flexible supply and 2 c/o SPDT output simplify protection schemes, reducing wiring complexity and enabling quick reconfiguration in response to changing motor loads. Four measuring ranges (3–30 V, 6–60 V, 30–300 V, 60–600 V) provide broad compatibility with diverse supply voltages, helping you avoid incorrect threshold selection and false trips. Hysteresis is adjustable from 3% to 30% of the threshold and trip/start delays are programmable from instantaneous to 30 seconds, allowing precise timing to suppress nuisance trips in noisy electrical environments. The device features IP50 housing with IP20 terminals, DIN-rail mounting options TH35-15 or TH35-7.5, and screwless push-in terminals for fast, secure wiring. These design choices translate to lower commissioning time, simplified maintenance, and improved panel reliability. Compatibility with multiple safety and control standards supports regulatory compliance while enabling standardized parts across global sites.
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FAQs
The CM-ESS.MP is designed for easy DIN-rail installation. Mount the unit on a standard TH35 rail (TH35-15 or TH35-7.5), snap it into place, and secure with the integrated latching mechanism. Connect the 24-240 V supply to the appropriate terminals, then wire the 2 c/o SPDT output to the controlled load or PLC input. Use the Easy Connect push-in terminals for fast, tool-free wiring and verify proper clearance for the rated insulation and operating temperature.
The CM-ESS.MP monitors voltages from 3 to 600 V (covering 3–30 V, 6–60 V, 30–300 V, and 60–600 V ranges) with a supply of 24–240 V AC/DC. It provides a 2 c/o SPDT output, enabling both normally open and normally closed configurations. This makes it suitable for open-circuit or closed-circuit protection schemes and flexible control logic in motor and panel protection applications.
Yes. The CM-ESS.MP supports both open- and closed-circuit protection principles, with selectable operating principle. The 2 c/o SPDT output allows integration into either open- or closed-loop control schemes, enabling precise shut-down or signaling actions based on monitored voltage levels. This versatility helps ensure reliable protection for motors, drives, and control circuits in demanding environments.
The CM-ESS.MP carries CE conformity, UL/CSA listings, and CB certification, among others, ensuring compliance for European and North American installations. It also aligns with standards such as IEC/EN 60255, IEC/EN 61000-6-2, and 61000-6-3, and supports RoHS, REACH, and CCC declarations. These certifications reduce risk during audits, enable easier market entry, and help meet customer and industry-spec requirements for electrical relays and control devices.
The CM-ESS.MP delivers measurable value by reducing nuisance trips through precise threshold and delay settings, cutting downtime and maintenance costs. Its Easy Connect terminals speed commissioning, while robust IP50 housing and DIN-rail mounting simplify installation and upgrades. With a maintenance-free design and durable specifications, you gain longer service intervals, improved panel reliability, and faster time-to-value for protection-critical applications.