ABB 1SVR740830R0400 Voltage Monitoring Relay -24-240 VAC/DC
Part Number: 1SVR740830R0400
Quick Summary
ABB CM-ESS.2P voltage monitoring relay is a compact single-function device that provides reliable over- and undervoltage protection for single-phase automation circuits. The challenge engineers face is configuring protection thresholds without triggering nuisance trips or causing extended downtime in busy control panels. This relay carries global certifications including CE and UL/CSA, with CB and CCC declarations enabling cross-border compliance, while meeting IP50 housing requirements for robust field service. Built for DIN-rail installations with Easy Connect push-in terminals, it simplifies commissioning and reduces maintenance costs. For modern panels, the CM-ESS.2P delivers predictable tripping behavior and straightforward integration into existing control architectures.
Product Information
Extended Description
1SVR740830R0400 ABB: The CM-ESS.2P is a single-functional 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 and works according to the open-circuit principle. The CM-ESS.2P is configurable for over- or undervoltage monitoring. The hysteresis is adjustable within a range of 3 to 30 % of the threshold value and 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 maintenance free Easy Connect Technology with push-in terminals.
Country of Origin
Germany (DE)
Lead Time
0 day
Made To Order
No
Warranty Return
Product under warranty must be returned
Product Sales Status
Active
Quote Only
No
Stocked At Warehouses
AETAD009EXPU
Country of Origin
Germany (DE)
Lead Time
0 day
Made To Order
No
Warranty Return
Product under warranty must be returned
Product Sales Status
Active
Quote Only
No
Stocked At Warehouses
BRABB008EXPU
Country of Origin
Germany (DE)
Lead Time
0 day
Made To Order
No
Warranty Return
Product under warranty must be returned
Product Sales Status
Active
Quote Only
No
Stocked At Warehouses
CHSEC006EXPU
Lead Time
160 day
Warranty Return
Product under warranty must be returned
Stocked At Warehouses
CZABB004EXPU
Country of Origin
Germany (DE)
Made To Order
No
Product Sales Status
Active
Quote Only
No
EAN
4016779852401
Minimum Order Quantity
1 piece
Customs Tariff Number
85364900
Data Sheet, Technical Information
Data sheet - CM-ESS.2P; CM-ESS.2S Voltage monitoring relays, 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
0.142 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) contacts
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 | Output Circuit 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
0.164 kg
Package Level 1 EAN
4016779852401
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)
2712247
E-Number (Norway)
4188085
E-Number (Sweden)
3860642
Feature → Business Impact → Application: The CM-ESS.2P accepts a universal control supply of 24 … 240 V AC/DC, and provides two SPDT outputs, enabling flexible wiring and signaling in compact panels, which reduces wiring complexity and panel depth while increasing reliability in motor and sensor protection. This translates to measurable uptime gains in packaging lines or conveyor sections, where quick diagnostics and clear signaling are essential. Feature → Business Impact → Application: RMS measuring of both AC and DC voltages across four ranges (3-30 V, 6-60 V, 30-300 V, 60-600 V) with an open-circuit monitoring principle minimizes false trips and improves protection accuracy for sensitive electronics in automation cabinets. This is particularly valuable for distributed I/O networks and PLC interfaces in industrial automation.
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FAQs
CM-ESS.2P is designed for DIN-rail mounting with TH35-15 or TH35-7.5 rails and features screwless/push-in terminals for quick, tool-free wiring. It supports flexible conductor sizes (2x 0.5 to 1.5 mm²) and offers wire-stripping length of 8 mm. With mounting positions 1 through 6, it integrates neatly into compact control panels and minimizes wiring complexity during panel build or retrofit.
The device monitors voltages across four measuring ranges: 3-30 V, 6-60 V, 30-300 V, and 60-600 V, using RMS measurement. It provides over- or undervoltage protection with an adjustable hysteresis of 3-30% and a selectable tripping delay from instantaneous 0 s up to 30 s. These features help tailor protection to specific loads and reduce nuisance trips.
Yes. The CM-ESS.2P family aligns with CE and UL/CSA requirements and carries CB, CCC, UKCA declarations, plus RoHS/REACH conformity. Its IP rating and CAN/CSA, UL 508, and EN/IEC standards support global deployments in diverse regulatory environments, making it suitable for multinational projects and multi-site rollouts.
With two SPDT outputs, 24-240 V supply compatibility, and a robust open-circuit measurement principle, CM-ESS.2P delivers dependable protection with minimal false trips. The maintenance-free Easy Connect push-in terminals and optional sealable cover reduce field service time, while DIN-rail mounting simplifies retrofits and future expansions, lowering total cost of ownership in automation panels.
Ideal for single-phase protection in motor drives, sensors, and control circuits within automation panels, CM-ESS.2P excels in packaging lines, conveyors, and process skids. Its wide supply range, compact form factor, and easily adjustable trip characteristics make it a reliable choice for panel builders needing predictable protection and fast commissioning in industrial environments.