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1SAE231111R0131 — Installation Contactor
contactorPart number: 1SAE231111R0131
ABB 1SAE231111R0131, type ESB25-31N-01, is a four-pole installation contactor with a 24 V AC/DC control coil and three normally open plus one normally closed main contacts. It is rated 25 A for AC-1 and AC-7a duty. For AC-3 motor duty at 400 V three-phase, the NO-contact rating is 9 A and 4 kW. The device measures 36 mm wide by 85 mm high by 65 mm deep and weighs 0.245 kg. Load suitability depends on the utilization category, contact arrangement and operating conditions.
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Technical specifications
| Manufacturer | ABB |
|---|---|
| Part number | 1SAE231111R0131 |
| Category | Electrical & controls |
| Product Net Width | 36 mm |
| Product Net Depth / Length | 65 mm |
| Product Net Height | 85 mm |
| Product Net Weight | 0.245 kg |
| Number of Main Contacts NO | 3 |
| Number of Main Contacts NC | 1 |
| Number of Auxiliary Contacts NO | 0 |
| Number of Auxiliary Contacts NC | 0 |
| Number of Poles | 4P |
| Rated Operational Voltage | Main circuit: 400 V AC; 220 V DC |
| Rated Frequency (f) | Control circuit: 50 Hz, 60 Hz, 400 Hz or DC; main circuit: 50 Hz, 60 Hz or DC |
| Rated Operational Current AC-1 (I e ) | NO: 25 A; NC: 25 A |
| Rated Operational Current AC-3 (I e ) | 230 V single-phase: NO 9 A, NC 6 A; 400 V three-phase: NO 9 A |
| Rated Operational Current AC-7a (I e ) | NO: 25 A; NC: 25 A |
| Rated Operational Current AC-7b (I e ) | 230 V single-phase: NO 9 A, NC 6 A; 400 V three-phase: NO 9 A |
| Rated Operational Power AC-1 (P e ) | (230 V) Single Phase, NC 5.8 kW |
| Rated Operational Power AC-3 (P e ) | 230 V single-phase: NO 1.3 kW, NC 1.3 kW; 400 V three-phase: NO 4 kW |
| Rated Operational Power AC-7a (P e ) | (230 V) Single Phase, NC 5.8 kW |
| Rated Operational Power AC-7b (P e ) | (230 V) Single Phase, NC 0.9 kW |
| Rated Breaking Capacity AC-3 | 8 x Ie / AC-3 |
| Rated Making Capacity AC-3 | 10 x Ie / AC-3 |
| Rated Short-time Withstand Current Low Voltage (I cw ) | at 40 °C Ambient Temp, in Free Air, from a Cold State 10 s 72 A |
| Rated Insulation Voltage (U i ) | 500 V |
| Rated Impulse Withstand Voltage (U imp ) | 6 kV |
| Maximum Electrical Switching Frequency | (AC-1) 300 cycles per hour |
| Coil Operating Limits | (acc. to IEC 60947-4-1) 0.85 ... 1.1 x Uc (at θ ≤ 55 °C) |
| Rated Control Circuit Voltage (U c ) | 24 V AC/DC |
| Power Loss | at Rated Operating Conditions AC-1 per Pole 2 W |
| Published component type | Installation Contactor |
| Reference status | Published part reference; specification and fitment require confirmation |
| Availability | On request |
Catalogue information may contain errors or be out of date. Full specifications and verified details are available on request. Confirm the part number and equipment fitment with us before ordering.
Product questions
Does ABB 1SAE231111R0131 require a 24 V AC or DC control supply?
The ESB25-31N-01 has a 24 V AC/DC control coil, so either supply type can be used at the specified control voltage. The 400 V AC main-circuit rating is not the coil voltage. The listed control frequencies include 50, 60 and 400 Hz as well as DC; a listing showing only 400 Hz is incomplete. Check the existing unit's full order code and control supply before selecting a replacement.
What does 3NO + 1NC mean on the ABB ESB25-31N-01?
This exact part has four main poles: three normally open contacts and one normally closed contact. With the coil de-energized, the three NO contacts are open and the NC contact is closed; energizing the coil reverses those states. The NC contact is a main contact, not a separate auxiliary contact. Do not treat this arrangement as four normally open poles when checking a replacement against the circuit diagram.
Is the ESB25-31N-01 rated for a 25 A motor load?
The 25 A rating applies to AC-1 and AC-7a duty, not to every motor load. For AC-3 duty, the listed NO-contact rating is 9 A and 4 kW at 400 V three-phase. At 230 V single-phase, the AC-3 current ratings are 9 A for NO contacts and 6 A for the NC contact, with 1.3 kW listed for either contact type. Select against the motor nameplate and utilization category, not just the 25 A headline. Equipment compatibility is not established by these ratings alone; provide the existing contactor code, wiring diagram and equipment model/serial number for replacement verification.
How much panel space does ABB 1SAE231111R0131 occupy?
The listed net dimensions are 36 mm wide, 85 mm high and 65 mm deep, with a net weight of 0.245 kg. Its width corresponds to two modular spacings. These are device dimensions, not a complete installation-clearance requirement; allow for wiring and any additional accessories when checking the panel layout.
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Research information may be outdated. Confirm fitment and specifications with our team before ordering.