
18728
Schneider Electric Acti9 NG125, circuit breaker, NG125H, 3P, 40A, C curve.
Show Specifications
Main Characteristics
| Lifecycle status | Discontinued by the manufacturer |
|---|---|
| Range | Acti9 |
| Product name | Acti9 NG125 |
| Product or component type | Miniature circuit-breaker |
| Device application | Distribution |
| Poles description | 3P |
| Number of protected poles | 3 |
| [In] rated current | 40 A at 40 °C |
| Network type | AC; DC |
| Trip unit technology | Thermal-magnetic |
| Curve code | C |
| Breaking capacity | 12 kA Icu at 500 V AC 50/60 Hz conforming to EN/IEC 60947-2; 30 kA Icu at 440 V AC 50/60 Hz conforming to EN/IEC 60947-2; 36 kA Icu at 380...415 V AC 50/60 Hz conforming to EN/IEC 60947-2; 70 kA Icu at 220...240 V AC 50/60 Hz conforming to EN/IEC 60947-2; 25 kA Icu at <= 375 V DC conforming to EN/IEC 60947-2 |
| Utilisation category | Category A conforming to IEC 60947-2 |
| Suitability for isolation | Yes conforming to IEC 60947-2 |
| Standards | EN/IEC 60947-2 |
Technical Data
| Network frequency | 50/60 Hz |
|---|---|
| [Ue] rated operational voltage | <= 375 V DC; 380...415 V AC 50/60 Hz; 500 V AC 50/60 Hz; 220...240 V AC 50/60 Hz; 440 V AC 50/60 Hz |
| Magnetic tripping limit | 8 x In +/- 20 % |
| [Ics] rated service breaking capacity | 52.5 kA 75 % conforming to EN/IEC 60947-2 - 220...240 V AC 50/60 Hz; 27 kA 75 % conforming to EN/IEC 60947-2 - 380...415 V AC 50/60 Hz; 22.5 kA 75 % conforming to EN/IEC 60947-2 - 440 V AC 50/60 Hz; 9 kA 75 % conforming to EN/IEC 60947-2 - 500 V AC 50/60 Hz; 25 kA 100 % conforming to EN/IEC 60947-2 - <= 375 V DC |
| [Ui] rated insulation voltage | 690 V AC 50/60 Hz conforming to EN/IEC 60947-2 |
| [Uimp] rated impulse withstand voltage | 8 kV conforming to EN/IEC 60947-2 |
| Contact position indicator | Yes |
| Control type | Toggle; Manual tripping test |
| Local signalling | ON/OFF indication; Trip indicator |
| Mounting mode | Clip-on |
| Mounting position | Vertical |
| Mounting support | 35 mm symmetrical DIN rail |
| Comb busbar and distribution block compatibility | YES |
| 9 mm pitches | 9 |
| Height | 103 mm |
| Depth | 81 mm |
| Width | 81 mm |
| Net weight | 0.72 kg |
| Mechanical durability | 20000 cycles |
| Electrical durability | 10000 cycles |
| Provision for padlocking | Padlockable |
| Locking options description | Integrated padlocking |
| Connections - terminals | Tunnel type terminals1.5…50 mm² rigid; Tunnel type terminals1…35 mm² flexible |
| Wire stripping length | 20 mm |
| Tightening torque | 3.5 N.m |
| Earth-leakage protection | Separate block |
Environment & Certifications
| IP degree of protection | IP20 conforming to IEC 60529 |
|---|---|
| IK degree of protection | IK05 conforming to EN/IEC 62262 |
| Pollution degree | 3 conforming to IEC 60947-2 |
| Overvoltage category | IV |
| Tropicalisation | 2 conforming to IEC 60068-1 |
| Relative humidity | 95 % at 55 °C |
| Ambient air temperature for operation | -30…70 °C |
| Ambient air temperature for storage | -40…70 °C |
Packaging & Logistics
| Number of Units in Package 1 | 1 |
|---|---|
| Package 1 Height | 8.6 cm |
| Package 1 Width | 12.4 cm |
| Package 1 Length | 13.1 cm |
| Package 1 Weight | 747 g |
| Number of Units in Package 2 | 18 |
| Package 2 Height | 30 cm |
| Package 2 Width | 30 cm |
| Package 2 Length | 40 cm |
| Package 2 Weight | 13.919 kg |
Warranty
| Warranty (in months) | 18 |
|---|
Pairs well with
Worldwide delivery, dispatched from Erbil
Technical support before and after you order
Genuine parts from authorised manufacturers
Obsolete and hard-to-find items sourced

18728
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping
We ship worldwide from our warehouse in Erbil, Iraq, and deliver across Baghdad and all governorates. Stocked lines dispatch quickly; items sourced to order have their lead time confirmed in writing with your quote.
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Technical support
Not sure which part you need, or whether an alternative is compatible? Send us the part number, the equipment it goes into, or a photo of the nameplate and our team will confirm the correct item before you order.
WhatsApp +964 781 287 9696 or sales@alnajahpower.com.
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Pricing and quotes
Prices are not shown online because they depend on quantity, specification and current availability. Add the items you need to your quote list and send it — we reply within one business day with pricing and lead time.
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Contact us
Alnajah Power
Makhmur Str. 83, Erbil 44020, IraqPhone / WhatsApp: +964 781 287 9696
sales@alnajahpower.comSaturday to Thursday, 09:00 – 18:00.
FAQs
Please read our FAQs page to find out more.
Do you supply genuine products?
We supply genuine industrial automation and electrical products from leading manufacturers including Siemens, ABB, Schneider Electric, Phoenix Contact, and Eaton. Product authenticity and quality are our priority.
Can I request a quotation?
Yes. If pricing is not displayed or you require multiple items, simply use the “Request a Quote” button or contact our sales team for a customized quotation.
Do you ship internationally?
Yes. We provide worldwide shipping and can deliver products to customers across Europe, the Middle East, Asia, and other international destinations.
Can you source obsolete or hard-to-find parts?
Yes. We specialize in sourcing discontinued, obsolete, and difficult-to-find industrial automation components through our global supplier network.
What industries do you serve?
We support customers in manufacturing, oil & gas, energy, utilities, water treatment, infrastructure, and industrial automation sectors.