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Brand: Schneider Electric
Schneider Electric GC2520B5 TeSys GC 25 A 2P Contactor
Description
GC2520B5 contactor: 24 V AC modular contactor for single-phase loads
The GC2520B5 is a Schneider Electric TeSys GC modular contactor with two normally open power poles, a 25 A AC-7a rating and a 24 V AC 50 Hz coil. It is one of the narrowest contactors in the family: the datasheet gives 17.5 mm width, which is a single 18 mm module on the DIN rail. Seven Star LLC supplies the GC2520B5 in Oman and the GCC as an independent supplier based in Muscat.
Reading the reference against its siblings: GC25 is the 25 A frame, the 20 in the middle matches the 2 NO pole arrangement, and B5 is the coil code that the title translates as 24 V AC. The low-voltage coil is the point of this variant. It lets a building-management panel, a thermostat or a small PLC relay output switch the load without any mains voltage on the control side.
Technical specifications of the GC2520B5
| Parameter | Specification |
|---|---|
| Manufacturer / part number | Schneider Electric / GC2520B5 |
| Description | Product datasheet TeSys GC – modular contactor – 25 A – 2 NO – coil 24 V AC |
| Range | TeSys |
| Product name | TeSys GC |
| Product or component type | Modular contactor |
| Device short name | GC25 |
| Contactor application | Motor control; Heating; Lighting |
| Utilisation category | AC-7B; AC-7A |
| Poles description | 2P |
| power pole contact composition | 2 NO |
| [Ue] rated operational voltage | <= 250 V AC |
| [Ie] rated operational current | 25 A AC-7A; 8.5 A AC-7B |
| Operating position | 30°/vertical |
| Control circuit type | AC at 50 Hz |
| [Uc] control circuit voltage | 24 V AC 50 Hz |
| [Uimp] rated impulse withstand | 4 kV |
| [Ith] conventional free air thermal | 25 A (at 50 °C) for power circuit |
| Irms rated making capacity | 68 A at 400 V AC for power circuit conforming to IEC 61095 |
| Rated breaking capacity | 68 A at 400 V for power circuit conforming to IEC 61095 |
| [Icw] rated short-time withstand | 200 A 40 °C – 10 s for power circuit |
| Associated fuse rating | 25 A gL at <= 440 V for power circuit |
| Average impedance | 2.5 mOhm – Ith 25 A 50 Hz for power circuit |
| [Ui] rated insulation voltage | 500 V conforming to IEC 61095; 500 V conforming to VDE 0110 |
| Electrical durability | AC-7A: 100000 cycles; AC-7B: 100000 cycles |
| Power dissipation per pole | 1.6 W |
| Control type | Remote control |
| Mounting mode | Clip-on |
| Mounting support | DIN rail; are subject to change – check with your local distributor. |
| Standards | IEC 61095; IEC 60947-5 |
| Connections – terminals | Control circuit: screw clamp terminals 1 cable(s) 2.5 mm²flexible without cable end |
| Operating time | 10 to 25 ms opening; 10 to 30 ms closing |
| Mechanical durability | 1000000 cycles |
| Maximum operating rate | 300 cyc/h 50 °C |
| Control circuit voltage limits | Drop-out: 0.2 to 0.75 Uc at 50 Hz (at <50 °C); Operational: 0.85 to 1.1 Uc at 50 Hz (at <50 °C) |
| Inrush power in VA | 15 VA 50 Hz (at 20 °C) |
| Hold-in power consumption in VA | 3.8 VA 50 Hz (at 20 °C) |
Coil behaviour of the GC2520B5 at 24 V AC
The datasheet gives an inrush consumption of 15 VA 50 Hz (at 20 °C) and a hold-in consumption of 3.8 VA 50 Hz (at 20 °C), both at 50 Hz and 20 °C. Those are small figures, so a 24 V control transformer of a few VA can feed several of these contactors together. The operating window is Drop-out: 0.2 to 0.75 Uc at 50 Hz (at <50 °C); Operational: 0.85 to 1.1 Uc at 50 Hz (at <50 °C), which means the coil pulls in reliably down to 85 percent of 24 V and releases at roughly one fifth to three quarters of the nominal voltage.
Operating time is listed as 10 to 25 ms opening; 10 to 30 ms closing, which is far shorter than any lighting or heating process needs.
Where the GC2520B5 fits in a small distribution board
TeSys GC is a contactor for the final distribution level, between a circuit breaker and the load. The 25 A rating under AC-7a covers resistive and low-inductance household-type loads, and the 8.5 A AC-7b figure is the number to respect for motor loads, such as a small fan or pump with a squirrel-cage motor. Using the 25 A figure on a motor circuit is the most common selection error with modular contactors.
Two poles means a phase and neutral can be switched together on a single-phase 230 V circuit, which is typical for a water-heater or a lighting group. For three-phase loads the three-pole GC2530M5 or GC4030M5 is the neighbour to look at.
Selection checklist for the GC2520B5
- Load current: 25 A is the AC-7a value; for motor use limit yourself to the 8.5 A AC-7b value.
- Coil: confirm that 24 V AC at 50 Hz is what your control source delivers; a 24 V DC source will not work on this AC coil.
- Poles: two normally open power poles only, no auxiliary contact is built in.
- Space: 17.5 mm wide, one module, with 81 mm height and 62.5 mm depth.
- Protection: the datasheet lists a 25 A gL fuse as associated protection up to 440 V.
- Frequency: this reference is the 50 Hz version; the 60 Hz coil exists as a separate reference.
Mounting and wiring of the GC2520B5
The contactor clips on a DIN rail and the datasheet allows a mounting position of 30 degrees or vertical. Both terminal groups are screw clamps tightened to 0.8 N.m, and the power terminals accept up to 6 mm² flexible conductor. Keep the coil circuit away from the power conductors to avoid induced chatter on long runs.
Because each pole dissipates about 1.6 W at rated current, several contactors mounted side by side at full load warm the enclosure. In a closed Gulf-climate cabinet allow a small gap or a ventilated panel and check the ambient limit given above.
Typical uses of the GC2520B5 in Oman and the GCC
In Oman the 24 V AC coil variant is usually specified for building services: villa and hotel lighting circuits, electric water heaters and small heating elements controlled from a BMS or a timer. Control wiring at 24 V is easier to certify in residential and commercial fit-outs.
It also appears in small packaged equipment and in lighting control panels at industrial sites, where the clip-on housing and the low coil consumption suit crowded boards.
GC modular contactor family compared with the GC2520B5
The five GC references below come from the same TeSys GC datasheet series and differ in current rating, pole count and coil. The highlighted row is the one on this page.
| Reference | Poles | Rated current | Coil | Width | Inrush | Hold-in |
|---|---|---|---|---|---|---|
| GC2520B5 | 2P | 25 A AC-7A / 8.5 A AC-7B | 24 V AC 50 Hz | 17.5 mm | 15 VA 50 Hz (at 20 ° | 3.8 VA 50 Hz (at 20 |
| GC2520M6 | 2P | 25 A AC-7A / 8.5 A AC-7B | 220 to 240 V AC 60 Hz | 17.5 mm | 15 VA 50 Hz (at 20 ° | 3.8 VA 50 Hz (at 20 |
| GC2530M5 | 3P | 25 A AC-7A / 8.5 A AC-7B | 220 to 240 V AC 50 Hz | 36 mm | 34 VA 50 Hz (at 20 ° | 4.6 VA 50 Hz (at 20 |
| GC4020M5 | 2P | 40 A AC-7A / 15 A AC-7B | 220 to 240 V AC 50 Hz | 36 mm | 34 VA 50 Hz (at 20 ° | 4.6 VA 50 Hz (at 20 |
| GC4030M5 | 3P | 40 A AC-7A / 15 A AC-7B | 220 to 240 V AC 50 Hz | 54 mm | 53 VA 50 Hz (at 20 ° | 6.5 VA 50 Hz (at 20 |
Information to send with an RFQ for the GC2520B5
- Full reference and quantity required
- Coil voltage and frequency available on site
- Load type and current (resistive, lighting or motor)
- Number of poles and enclosure space available
- Delivery location and timing
Documents and quotation
A datasheet for the GC2520B5 is attached on this page. It carries the electrical, mechanical and environmental data summarised above, so the figures can be checked against your drawings.
Send the part number, quantity and application and we will confirm availability and a quotation. Seven Star LLC is an independent supplier in Muscat and is not affiliated with the manufacturer.
Other Models in the Se Tesys Gc Range
Seven Star LLC supplies models from the Se Tesys Gc range in Oman and the GCC. Compare the related models below and request a quote for the one that matches your application.
| Model | Category | |
|---|---|---|
| Schneider Electric GC2520B5 TeSys GC 25 A 2P Contactor | Contactors & Overload Relays | You are viewing this model |
| Schneider Electric GC4020M5 TeSys GC 40 A 2P Contactor | Contactors & Overload Relays | View details |
Datasheets & Documents
- Datasheet Schneider Electric GC2520B5 Datasheet Download
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About brand
Schneider Electric is the French group for energy management and industrial automation: low and medium voltage switchgear and circuit breakers, motor control, drives, PLCs, power monitoring, UPS systems and building management. Its history goes back to 1836, when the brothers Adolphe and Eugène Schneider took over the iron and steel works at Le Creusot in Burgundy. Over the 20th century the company left steel and heavy engineering and became an electrical group through acquisitions such as Merlin Gerin, Télémécanique, Square D and Modicon. Its head office is in Rueil-Malmaison near Paris, and its shares are listed on Euronext Paris.
Schneider Electric company profile
| Origins | 1836, Le Creusot, France: Adolphe and Eugène Schneider take over the Le Creusot foundry |
|---|---|
| Headquarters | Rueil-Malmaison (Paris region), France |
| Ownership | Public company listed on Euronext Paris |
| Key acquisitions | Télémécanique (1988), Square D (1991), Merlin Gerin (1992), Modicon (1997), APC (2007), Invensys (2014); majority owner of AVEVA software |
| Brand names still in use | Acti9, ComPacT and MasterPacT breakers, TeSys motor control, Altivar drives, Altistart soft starters, Modicon PLCs, Harmony control components, PowerLogic and Easergy protection and metering, APC UPS, EcoStruxure software platform |
| Product families | Low voltage distribution, medium voltage switchgear and protection relays, motor control and drives, PLCs and HMIs, power meters, UPS and cooling, enclosures, building automation and energy software |
Milestones
- 1836: The Schneider brothers acquire the Le Creusot works; the business grows in steel, locomotives and heavy engineering.
- 1975: First investment in Merlin Gerin, a French maker of electrical distribution equipment.
- 1988–1992: Télémécanique, Square D (USA) and Merlin Gerin join the group, making it an electrical specialist.
- 1997: Modicon, the company behind the first programmable logic controller, joins the group.
- 1999: The group takes the name Schneider Electric.
- 2007 and 2014: APC (UPS and data centre power) and Invensys (process automation) are acquired.
Choosing Schneider Electric breakers and motor control
Circuit breakers are chosen by current and breaking capacity. Acti9 miniature circuit breakers (iC60, C120) protect final circuits up to 125 A. ComPacT NSX molded case breakers cover about 16 to 630 A, and the letter after the frame size sets the breaking capacity: B, F, N, H, S, L from lowest to highest. MasterPacT air circuit breakers are used as main incomers on large switchboards. For motors, a TeSys contactor with an LRD overload relay or a GV2 motor circuit breaker suits direct starting, an Altistart soft starter reduces starting current, and an Altivar drive controls speed. The breaking capacity must always be at least the prospective short-circuit current at the point of installation.
Where Schneider Electric products are used
In Oman and the GCC, Schneider Electric equipment is found in main and sub-main switchboards of commercial and residential buildings, motor control centres in water, oil and gas and industrial plants, substations protected by Sepam and Easergy relays, data centres powered by Galaxy and APC UPS systems, and buildings controlled by EcoStruxure Building Operation.
APC by Schneider Electric: UPS and critical power
Since 2007, APC has been part of Schneider Electric and is now its product brand for uninterruptible power supplies, replacement batteries, battery packs, network management cards and rack power distribution. Our APC catalogue covers Smart-UPS line-interactive and on-line models, Easy UPS On-Line, the modular Symmetra LX, RM and PX ranges, Silcon three-phase systems and their spare part kits, and the RBC cartridges that keep them running. Schneider Electric breakers, drives and PLCs can be quoted together with APC UPS systems in one request.
Schneider Electric products we list
| Family | Examples |
|---|---|
| Circuit breakers | Acti9 iC60N, C120N, NSX100F, NSX250N, NSX630, EasyPact EZC, MasterPacT MTZ1, MasterPacT NW |
| Motor control | TeSys Deca LC1D, TeSys F, LRD overload relay, GV2ME08, Altistart 22, Altistart 480 |
| Drives | Altivar 12, Altivar 320, ATV340, Altivar Process 630, ATV930, Lexium 32 servo |
| PLCs, HMIs and relays | Modicon M221, M241, M580 BMEP582040, Zelio Logic, Magelis HMISTU655 |
| Protection, metering and power | Sepam series 20, Easergy P3U30, MiCOM P139, PM5560, iEM3255, Galaxy VS UPS |
Ordering Schneider Electric products: what we need
Send the commercial reference from the label (for example LC1D18M7 or ATV320U22N4C). For breakers, confirm the rated current, number of poles, breaking capacity and trip unit. For contactors, give the coil voltage. For drives, give the motor power and supply voltage. APC products are listed on their own brand page.
Facts checked against Schneider Electric's published company history, October 2026.
Browse Schneider Electric products by category: Circuit Breaker, Electrical & Power Modules, AC Drives, PLC & I/O Cards, Metering Systems, UPS and Batteries.
FAQ
Questions about the Schneider Electric GC2520B5 TeSys GC 25 A 2P
Answers from our engineering team on installation, compatibility and integration.
01What is the coil voltage of the GC2520B5?
The coil is 24 V AC at 50 Hz. Operating limits are listed as 0.85 to 1.1 Uc and drop-out between 0.2 and 0.75 Uc.
02Can the GC2520B5 start motors?
It is rated 25 A AC-7a and 8.5 A AC-7b. The AC-7b figure is the one that applies to motor loads, so it is meant for small motors only.
03How wide is the GC2520B5?
The datasheet gives 17.5 mm width, 81 mm height and 62.5 mm depth, one 18 mm module.
04Does the GC2520B5 have auxiliary contacts?
The datasheet describes two normally open power poles and no built-in auxiliary contact.
05Which fuse does the datasheet associate with the GC2520B5?
A 25 A gL fuse for operation up to 440 V is listed for the power circuit.
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