Nichiyu Electric Manufacturing Co., Ltd. Complete Electromagnetic Type FM Leakage Circuit Breaker Product Catalog
Nikko Electric Manufacturing Co., Ltd. (Fully Electromagnetic Circuit Breakers / Residual Current Circuit Breakers / Circuit Protectors) Nikko Electric (Transformers / Reactors / Coils)
Also featuring auxiliary devices and related products! Introducing the leakage circuit breakers handled by our company!
This catalog introduces the "Leakage Circuit Breakers" handled by Nikkou Electric. It includes a list of ratings, auxiliary devices, related products, specifications by type, characteristics, and dimensional drawings. Please feel free to download and take a look. 【Contents (partial)】 ■ List of ratings ■ Auxiliary devices ■ Introduction of products related to leakage circuit breakers ■ Specifications by type, characteristics, dimensional drawings ■ Series for welding machines *For more details, please refer to the PDF document or feel free to contact us.
Inquire About This Product
basic information
【Featured Products】 ■Economical Products (EY) Series ■General Purpose (ES) Series ■Three-Phase 4-Wire (4-Pole) Series *For more details, please refer to the PDF document or feel free to contact us.
Price range
Delivery Time
Applications/Examples of results
For more details, please refer to the PDF document or feel free to contact us.
Line up（31）
| Model number | overview |
|---|---|
| Fully Electromagnetic Leakage Circuit Breaker FM Leakage Circuit Breaker (ELCB) [Economical Product (EY) Series] EY403 | https://nikkomccbelcb.hateblo.jp/entry/2022/02/01/090000 |
| Complete electromagnetic leakage circuit breaker FM leakage circuit breaker (ELCB) [Economical Product (EY) Series] EY603 | https://nikkomccbelcb.hateblo.jp/entry/2022/02/02/090000 |
| Fully Electromagnetic Leakage Circuit Breaker FM Leakage Circuit Breaker (ELCB) [General Purpose (ES) Series] ES403D | https://nikkomccbelcb.hateblo.jp/entry/2022/02/03/090000 |
| Complete electromagnetic leakage circuit breaker FM leakage circuit breaker (ELCB) [General-purpose (ES) series] ES403N | https://nikkomccbelcb.hateblo.jp/entry/2022/02/04/090000 |
| Fully Electromagnetic Leakage Circuit Breaker FM Leakage Circuit Breaker (ELCB) [General Purpose (ES) Series] ES603D | https://nikkomccbelcb.hateblo.jp/entry/2022/02/05/090000 |
| Fully Electromagnetic Leakage Circuit Breaker FM Leakage Circuit Breaker (ELCB) [General Purpose (ES) Series] ES603N | https://nikkomccbelcb.hateblo.jp/entry/2022/02/06/090000 |
| Fully electromagnetic leakage circuit breaker FM leakage circuit breaker (ELCB) [Three-phase 4-wire (4-pole) series] ES54C, ES54H, ES104C, ES104H | https://nikkomccbelcb.hateblo.jp/entry/2022/02/07/090000 |
| Complete electromagnetic leakage circuit breaker FM leakage circuit breaker (ELCB) [Three-phase 4-wire (4-pole) series] ES204 | https://nikkomccbelcb.hateblo.jp/entry/2022/02/08/090000 |
| Fully electromagnetic leakage circuit breaker FM leakage circuit breaker (ELCB) [Three-phase 4-wire (4-pole) series] ES404D | https://nikkomccbelcb.hateblo.jp/entry/2022/02/09/090000 |
| Complete electromagnetic leakage circuit breaker FM leakage circuit breaker (ELCB) [Three-phase 4-wire (4-pole) series] ES604D | https://nikkomccbelcb.hateblo.jp/entry/2022/02/10/090000 |
| Fully electromagnetic leakage circuit breaker FM leakage circuit breaker (ELCB) [Leakage circuit breaker for welding machines] Arc welding machine series (ES103CS EY203S ES203S EY403S) | https://nikkomccbelcb.hateblo.jp/entry/2022/02/11/090000 |
| Fully electromagnetic leakage circuit breaker FM leakage circuit breaker (ELCB) [Leakage circuit breaker for welding machines] Spot welding machine (resistance welding machine) series (ES202T EY402T EY602T EY403V) | https://nikkomccbelcb.hateblo.jp/entry/2022/02/12/090000 |
| Leakage Current Alarm Circuit Breaker General Purpose Series (ES104C-R ES104H-R ES204-R ES403D-R ES404D-R ES603D-R ES604D-R ES403N-R ES603N-R) | https://nikkomccbelcb.hateblo.jp/entry/2022/02/13/090000 |
| Complete electromagnetic leakage circuit breaker FM leakage circuit breaker (ELCB) [Leakage alarm equipped wiring circuit breaker] Economic product series (EY403-R EY603-R) | https://nikkomccbelcb.hateblo.jp/entry/2022/02/14/090000 |
| Complete Electromagnetic Leakage Circuit Breaker 【FM Leakage Circuit Breaker (ELCB) Rating List】 Economic Product EY Series (EY403 EY603) | https://nikkomccbelcb.hateblo.jp/entry/2022/02/15/090000 |
| Complete Electromagnetic Leakage Circuit Breaker [FM Leakage Circuit Breaker (ELCB) Rating List] Three-phase 4-wire (4-pole) Series (ES54C ES54H ES104C ES104H ES204 ES404D ES604D) | https://nikkomccbelcb.hateblo.jp/entry/2022/02/17/090000 |
| Complete Electromagnetic Leakage Circuit Breaker [FM Leakage Circuit Breaker (ELCB) Rating List] General-purpose ES Series (ES403D ES403N ES603D ES603N) | https://nikkomccbelcb.hateblo.jp/entry/2022/02/16/090000 |
| Fully Electromagnetic Leakage Circuit Breaker FM Leakage Circuit Breaker (ELCB) 【Ordering Method】 | https://nikkomccbelcb.hateblo.jp/entry/2022/01/14/090000 |
| Fully electromagnetic leakage circuit breaker FM leakage circuit breaker (ELCB) accessory (type of accessory) | https://nikkomccbelcb.hateblo.jp/entry/2022/01/01/090000 |
| Complete electromagnetic leakage circuit breaker FM leakage circuit breaker (ELCB) accessory device (main circuit connection method) surface type rear type SN embedded type FC plug-in type SP pull-out type SP DR connection conductor SD | https://nikkomccbelcb.hateblo.jp/entry/2022/01/02/090000 |
| Fully electromagnetic leakage circuit breaker FM leakage circuit breaker (ELCB) internal accessory device ratings, etc. [Alarm switch (abbreviation: KC, KCG)] | https://nikkomccbelcb.hateblo.jp/entry/2022/01/03/090000 |
| Fully electromagnetic leakage circuit breaker FM leakage circuit breaker (ELCB) internal accessory device ratings, etc. [Leakage circuit breaker alarm switch (abbreviation: EKC)] | https://nikkomccbelcb.hateblo.jp/entry/2022/01/04/090000 |
| Completely electromagnetic leakage circuit breaker FM leakage circuit breaker (ELCB) specifications of internal accessories [Auxiliary switch (abbreviation: HC, HCG)] | https://nikkomccbelcb.hateblo.jp/entry/2022/01/05/090000 |
| Fully electromagnetic leakage circuit breaker FM leakage circuit breaker (ELCB) internal accessory device ratings, etc. [External testing mechanism (abbreviations: EG1, EG2)] | https://nikkomccbelcb.hateblo.jp/entry/2022/01/06/090000 |
| Fully electromagnetic leakage circuit breaker FM leakage circuit breaker (ELCB) internal accessory device ratings, etc. [Insulation resistance measurement (megatest) mechanism (abbreviation: MGT)] | https://nikkomccbelcb.hateblo.jp/entry/2022/01/07/090000 |
| Completely Electromagnetic Leakage Circuit Breaker FM Leakage Circuit Breaker (ELCB) Ratings of Internal Accessories 【Combination Table of Internal Accessories】 | https://nikkomccbelcb.hateblo.jp/entry/2022/01/08/090000 |
| Fully electromagnetic leakage circuit breaker FM leakage circuit breaker (ELCB) external accessory [Terminal cover (abbreviation: TNC)] | https://nikkomccbelcb.hateblo.jp/entry/2022/01/09/090000 |
| Fully electromagnetic leakage circuit breaker FM leakage circuit breaker (ELCB) external accessory device [Operation prevention device (abbreviation: TB)] | https://nikkomccbelcb.hateblo.jp/entry/2022/01/10/090000 |
| Fully Electromagnetic Leakage Circuit Breaker FM Leakage Circuit Breaker (ELCB) External Accessory Device [Auxiliary Handle (Abbreviation: EXH)] | https://nikkomccbelcb.hateblo.jp/entry/2022/01/11/090000 |
| Fully electromagnetic leakage circuit breaker FM leakage circuit breaker (ELCB) external accessories [remote control device (MRC), external operating mechanism (GS-E), interlock device (INT), etc.] | https://nikkomccbelcb.hateblo.jp/entry/2022/01/12/090000 |
| Fully Electromagnetic Leakage Circuit Breaker FM Leakage Circuit Breaker (ELCB) [Introduction to Leakage Circuit Breaker Related Products] | https://nikkomccbelcb.hateblo.jp/entry/2022/01/13/090000 |
catalog（20）
Download All Catalogs
![Towards a Decarbonized Society! High-efficiency, Compact, Lightweight, Energy-saving NCW Transformer [Nikko Electric Co., Ltd., a transformer manufacturer in Miyagi Prefecture]](https://image.mono.ipros.com/public/catalog/image/01/4d1/489374/IPROS75711487420059649575.jpeg?w=120&h=170)
![Nikko Electric Manufacturing Co., Ltd. Surge Protective Device Separator (SPD Separator) DSP103A [Nikko Electric Co., Ltd., a transformer manufacturer in Miyagi Prefecture]](https://image.mono.ipros.com/public/catalog/image/01/0fe/539012/IPROS42584931899982741963.jpeg?w=120&h=170)
![Energy-saving transformers and NCW transformer catalog (custom-made products) [Nikko Electric Co., Ltd., a transformer manufacturer in Miyagi Prefecture]](https://image.mono.ipros.com/public/catalog/image/01/ab7/580696/IPROS88458150258416680371.jpeg?w=120&h=170)
![Nikko Electric Manufacturing Co., Ltd. Circuit Protector General Catalog [Nikko Electric Co., Ltd., a transformer manufacturer in Miyagi Prefecture]](https://image.mono.ipros.com/public/catalog/image/01/b7f/539011/IPROS54624496212208372743.jpeg?w=120&h=170)
News about this product（13）
Company information
At the TECHNO-FRONTIER 2025 Power System Exhibition, we were fortunate to connect with many people this year. Thank you to everyone who visited us. - Nikkou Electric's new base, Satellite Akiba (Tokyo, Akihabara), opened in February 2024. We aim to create a facility that connects our sales team, factory technology, and the web in real-time to propose the most suitable transformers to our customers. If you have any issues regarding transformers, coils, or reactors, please feel free to consult Nikkou Electric. We will propose the optimal transformer through discussions with our customers.