Changes of Molded case circuit breaker, Earth leakage circuit breaker
Which generation does your molded case circuit breaker belong to?
Which generation does your earth leakage circuit breaker belong to?
Recommendation of upgrade
Proposal of replacement of molded case circuit breaker

[Compliant with international standards]
• G-TWIN Compliant with the certifications and standards of chief regions of the world (JIS, CCC, CE, UL)
• BX series: IEC60947-2, EN60947-2, JIS C 8201-2-1
[Ease of use]
• G-TWIN: Usability improved by standardization and modularization of internal auxiliary accessories
• BX series: Control unit selectable according to protection and measurement needs
[Compact and high performance]
• G-TWIN: Japan's standard compact size and certified to UL489 480V
Old product and current product

[History of models]
Series | Type | Manufacture year |
---|---|---|
(1) TWIN BREAKER series | EA203B | 1990 – 2009 |
(2) Super TWIN series | EA403B | 1992 – 2009 |
(3) α-TWIN series | EA33AC | 2001 – 2010 |
(4) G-TWIN series | BW250EAG-3P | 2007 – Current model |

[History of models]
Series | Type | Manufacture year |
---|---|---|
(1) TWIN BREAKER series | EG203B | 1990 – 2009 |
(2) Super TWIN series | EG403B | 1992 – 2009 |
(3) α-TWIN series | EG33C | 2001 – 2010 |
(4) G-TWIN series | EW250EAG-3P | 2007 – Current model |

[History of models]
Series | Type | Manufacture year |
---|---|---|
(1) DA series | DA50 | 1978 – 1991 |
(2) DB series | DB40 | 2001 – 2010 |
(3) DW series | DW40 | 2013 – Current model |
(4) BT3 series | BT3-2500P | 2014 – Current model |