Types of Molded Case Circuit Breakers: MCCB Guide for Engineers
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- Part number
- G20B4A40
Schneider Electric G20B4A40 GoPact MCCB200B 4P 40 A 25 kA TM-D Fixed Moulded Case Circuit Breaker
GoPact MCCB200B 4P 40 A moulded case circuit breaker, 25 kA Icu at 415V AC, TM-D trip unit.
Description
About the G20B4A40
About the G20B4A40
The Schneider Electric G20B4A40 is a 4-pole GoPact MCCB200B moulded case circuit breaker rated 40 A (In) at 415 V AC (Ue), with 25 kA breaking capacity (Icu) at 380/415 V AC. It carries a thermal-magnetic TM-D trip unit (functions LI) with Ir thermal pick-up adjustable from 28 to 40 A and an 12 x In fixed magnetic short-circuit trip, and mounts fixed with front screw-terminal connections for distribution circuits in panels and switchboards.
Certifications & Standards
- EN/IEC 60947-1
- EN/IEC 60947-2
- EN/IEC 60947-2 Annex H
Selection Notes
The TM-D trip unit's Ir thermal pick-up is adjustable from 28 to 40 A (0.7-1 x In), so this 40 A frame can be tuned down to match the actual conductor or load current instead of relying on the next frame size down. The magnetic short-circuit trip is fixed at 12 x In (480 A) rather than independently adjustable, so coordination with downstream devices depends on time-current curve separation rather than an Isd setting. At 25 kA Icu at 380/415 V AC, the B performance level covers general distribution duty on this 200 A frame; where a higher prospective fault current is expected, the equivalent N or H breaking-capacity variant in the same frame is the better fit.
Specification
Full specification
Main 18
| Range of product | GoPact MCCB |
|---|---|
| Product or component type | Circuit breaker |
| Product name | GoPact MCCB 200 |
| Device application | Distribution |
| Poles description | 4P |
| Protected poles description | 4D |
| Neutral position | Left |
| [In] rated current | 40 A at 40 °C, 40 A at 50 °C |
| [Ue] rated operational voltage | 415 V AC 50/60 Hz conforming to EN/IEC 60947-2 |
| Suitability for isolation | Yes conforming to EN/IEC 60947-2 |
| Utilisation category | Category A |
| [Icu] rated ultimate short-circuit breaking capacity | 25 kA Icu at 380/415 V AC 50/60 Hz conforming to EN/IEC 60947-2, 36 kA Icu at 220/230 V AC 50/60 Hz conforming to EN/IEC 60947-2 |
| Performance level | B 25 kA 380/415 V AC |
| Trip unit name | TM-D |
| Trip unit technology | Thermal-magnetic |
| Trip unit protection functions | LI |
| Control type | Toggle |
| Circuit breaker mounting mode | Fixed |
Complementary 25
| [Ui] rated insulation voltage | 440 V AC conforming to EN/IEC 60947-2 |
|---|---|
| [Uimp] rated impulse withstand voltage | 6 kV conforming to EN/IEC 60947-2 |
| [Ics] rated service short-circuit breaking capacity | 25 kA at 380/415 V AC 50/60 Hz conforming to EN/IEC 60947-2, 36 kA at 220/230 V AC 50/60 Hz conforming to EN/IEC 60947-2 |
| Mechanical durability | 30000 cycles |
| Electrical durability | 8000 cycles at 415 V In |
| Power dissipation per pole | 16 W |
| Mounting support | Backplate |
| Mounting position | Horizontal and vertical, Flat on the back |
| Upside connection | Front |
| Downside connection | Front |
| Connection terminals | screw terminals |
| Connection pitch | 25 mm |
| Protection type | L : for overload protection (thermal), I : for short-circuit protection (magnetic) |
| Trip unit rating | 40 A at 40 °C, 40 A at 50 °C |
| Long-time pick-up adjustment type Ir (thermal protection) | Adjustable |
| [Ir] long-time protection pick-up adjustment range | 0.7...1 x In |
| Long-time protection delay adjustment type tr | Fixed |
| Instantaneous protection pick-up adjustment type Ii | Fixed |
| [Ii] instantaneous protection pick-up adjustment range | 12 x In |
| Neutral protection settings | 1 x Ir (4D) |
| Width (W) | 100 mm |
| Height (H) | 130 mm |
| Depth (D) | 60 mm |
| Net weight | 1.1 kg |
| Colour | Grey (RAL 7035) |
Environment 7
| Standards | EN/IEC 60947-1, EN/IEC 60947-2, EN/IEC 60947-2 Annex H |
|---|---|
| Overvoltage category | III |
| Pollution degree | 3 conforming to IEC 60664-1 |
| IP degree of protection | IP20 conforming to IEC 60529 |
| Ambient air temperature for operation | -20…55 °C |
| Ambient air temperature for storage | -35…85 °C |
| Operating altitude | 0...2000 m without derating, 2000...5000 m with derating |
Show all 79 specifications ↓ Show less ↑29 more values in Identification, Contractual warranty, Logistics.
Identification 6
| Part number | G20B4A40 |
|---|---|
| Brand | Schneider Electric |
| Condition | New, factory sealed |
| Source | Schneider Electric and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
Contractual warranty 1
| Warranty (in months) | 18 |
|---|
Logistics 22
| Unit Type of Package 1 | PCE |
|---|---|
| Number of Units in Package 1 | 1 |
| Package 1 Height | 13.6 cm |
| Package 1 Width | 11 cm |
| Package 1 Length | 13.9 cm |
| Package 1 Weight | 1650 g |
| Unit Type of Package 2 | S02 |
| Number of Units in Package 2 | 6 |
| Package 2 Height | 15 cm |
| Package 2 Width | 30 cm |
| Package 2 Length | 40 cm |
| Package 2 Weight | 10.215 kg |
| Unit Type of Package 3 | P06 |
| Number of Units in Package 3 | 96 |
| Package 3 Height | 75 cm |
| Package 3 Width | 60 cm |
| Package 3 Length | 80 cm |
| Package 3 Weight | 171.94 kg |
| Shipping weight | 1.1 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 30 Oct 2026
Documents
Documents for G20B4A40
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Certifications
Certifications and standards
- EN/IEC 60947-1
- EN/IEC 60947-2
- EN/IEC 60947-2 Annex H
Quick answers
Questions about the G20B4A40
What is the rated current of G20B4A40?
The rated current of G20B4A40 is 40 A.
Which supply voltage is G20B4A40 rated for?
The rated operational voltage of G20B4A40 is 415 V AC.
What is the HS code of G20B4A40 for customs?
The tariff (HS) code on file for G20B4A40 is 85362090.
Where does G20B4A40 ship from, and how fast?
G20B4A40 ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
Guides
Guides for MCCB
How to Select the Right MCCB for Your Application: Engineer Checklist
Select the right MCCB with our engineer checklist covering IEC 60947-2, sizing, breaking capacity, trip units, and derating for industry. Shop at Stoklink.
IEC 60947-2 Standards for Molded Case Circuit Breakers Explained
IEC 60947-2 defines MCCB ratings Icu, Ics, Icw, utilization categories A and B, and type tests for low-voltage circuit breakers up to 1000V. Shop...
Reviews
Customer reviews
Series
Schneider Electric Schneider GoPact
- Brand
- Schneider Electric
- Series
- Schneider GoPact
