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Brand: Hager
Hager ESC125 25 A 1NO 230 V Modular Contactor
Description
One-module 25 A contactor for lighting and resistive switching
The Hager ESC125 is a modular contactor with a single normally open contact rated 25 A, switched by a 230 V AC, 50 Hz coil. It occupies one DIN-rail module (17.85 mm) and is used to switch loads from a remote or automatic command, such as lighting groups, resistive heaters or small domestic-type loads, in distribution boards and building control panels.
The utilisation category printed on the datasheet is AC-7a/AC-7b, which covers slightly inductive and household-type loads. Hager does not list motor categories such as AC-3 for this model, so do not use it to start motors without confirming the rating with the manufacturer.
Technical specifications
| Parameter | Specification |
|---|---|
| Manufacturer / order code | Hager / ESC125 |
| Product description | Contactor 25A, 1NO, 230V~50Hz |
| Contacts | 1 NO, 0 NC |
| Rated current IN | 25 A |
| Utilisation category | AC-7a / AC-7b |
| Rated operational voltage Ue | 230 V |
| Coil (command) voltage | 230 V AC, 50 Hz; no DC |
| Rated insulation voltage Ui | 250 V |
| Rated impulse withstand Uimp | 4000 V |
| Power dissipation at IN | 2.5 W |
| Inrush power absorbed | 10.7 VA |
| Manual switch | No |
| Mechanical endurance | 100000 operations |
| Electrical endurance | 30000 cycles |
| Operating temperature | -10 to 50 °C |
| Storage / transport temperature | -40 to 80 °C |
| Conductor cross-section, rigid / flexible | 1 – 10 mm2 / 1 – 6 mm2 |
| Tightening torque | 1.2 Nm |
| Modules | 1 |
| Dimensions H x W x D | 83 x 17.85 x 60 mm |
| Environmental | RoHS conform |
Choosing a contactor for the load
The 25 A rating applies to the resistive and AC-7 duty stated by Hager; loads with high inrush, such as discharge lighting banks or capacitive electronic ballasts, may need a derated figure or a different contactor. Compare the load current with the rating and allow for the 4000 V impulse category in the installation. With no manual override and a coil rated for 230 V only, the device suits automatic control schemes in which a timer, thermostat or building controller drives the coil.
Coil consumption is small: 10.7 VA on pull-in and 2.5 W dissipated at rated current, which helps when many contactors share one panel. Leave space between adjacent contactors if the board runs hot, because the operating range stops at 50 degrees C.
Installation notes
Wire the supply through the power terminals, which accept rigid conductors up to 10 mm2 and flexible up to 6 mm2, and tighten them to 1.2 Nm. Keep coil circuits protected by a suitable small breaker. For a similar function from another maker, see the Finder 22.32 modular contactor on this site.
Related Hager products: Hager CDC264J 2P 63 A 30 mA Type AC RCCB, Hager HET250JR h3+ P250 3P 250 A 70 kA LSI Electronic MCCB, Hager HHS063DC h3+ P160 3P 63 A 25 kA Thermal-Magnetic MCCB, Hager HMT251GR h3+ P250 4P 250 A 50 kA LSnI Electronic MCCB, Hager NBN106A 1P B-Curve 6 A Miniature Circuit Breaker and Hager HHB250Z x250 3P 250 A 25 kA Thermal-Magnetic MCCB.
Documents and quotation
The attached Hager datasheet supplies every value shown. For a quotation send the order code, coil voltage, load type and quantity. Related devices are in the contactors and overload relays category.
Datasheets & Documents
- Datasheet Hager ESC125 product datasheet (EN) Download
Reviews (0)
About brand
Hager Group is a German family-owned maker of electrical installation systems, founded in January 1955 in Ensheim, Saarland, by Peter Hager with his sons Oswald and Hermann. It first made meter and distribution boards and opened its first French plant in Obernai, Alsace, in 1959. The group is headquartered in Blieskastel, Germany, and still controlled by the Hager family.
Seven Star LLC is an independent supplier in Muscat. We list Hager protective devices for panel builders and contractors in Oman and the GCC.
Hager company profile
| Founded | January 1955, Ensheim, Saarland, Germany |
|---|---|
| Founders | Peter Hager with his sons Oswald and Hermann |
| Headquarters | Blieskastel, Germany |
| Ownership | Hager family |
| First products | Meter and distribution boards |
| Product families | Miniature circuit breakers, RCDs and RCBOs, h3+ moulded-case circuit breakers, consumer units and distribution boards, enclosures, surge protection, KNX and building automation, EV chargers |
Milestones
- 1955: Hager is founded in Ensheim.
- 1959: The first French plant opens in Obernai.
- 2025: Hager marks 70 years.
Hager product series
Modular devices include the NBN106A 1P B-curve 6 A miniature circuit breaker, the CDC264J 2P 63 A 30 mA Type AC RCCB, the SPB440D 4P Type 2 surge protection device and the ESC125 25 A modular contactor.
Moulded case circuit breakers include the HHS063DC h3+ P160 63 A, the HHB250Z x250 250 A thermal-magnetic MCCB, the HET250JR h3+ P250 with LSI electronic trip and 70 kA breaking and the HMT251GR h3+ P250 four-pole LSnI electronic MCCB.
MCB curves set the magnetic trip: B for resistive loads and long cables, C for general use and D for motors and transformers. Electronic MCCB trip units such as LSI and LSnI allow long time, short time, instantaneous and neutral settings to coordinate with downstream devices.
Where Hager devices are used
Final distribution boards, main and sub-main panels, building services and commercial and industrial installations.
Hager products we list
Ordering Hager devices: what we need
Send the Hager reference, or the rated current, poles, curve or trip unit, breaking capacity and accessories required.
Facts checked against Hager Group's own history pages (hagergroup.com), October 2026.
Browse Hager products by category: Circuit Breakers.
FAQ
Questions about the Hager ESC125 25 A 1NO 230 V Modular Contactor
Answers from our engineering team on installation, compatibility and integration.
01What is the coil voltage of the ESC125?
230 V AC at 50 Hz; the datasheet lists no DC command voltage.
02What contact arrangement does it have?
One normally open contact and no normally closed contact.
03Which utilisation category is stated?
AC-7a/AC-7b, for household-type and slightly inductive loads.
04How wide is the ESC125?
It is one module, 17.85 mm wide, 83 mm high and 60 mm deep.
05Does it have a manual override switch?
No. The datasheet states there is no manual switch.
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