Start here for access to our Knowledge Base to get answers to over one hundred thousand questions online in seconds.Find Answers
...See what we've been doing in some of our major markets.Find your Location
Access tailored services, 24/7 self-service and expert help. Anywhere, anytime, any project.Discover now
Everything you need to know about our IoT technology backbone.Learn more
Explore our global offerings or select your country from one of our five regions.Global
Découvrez nos offres globales ou sélectionnez votre pays dans l’une de nos cinq régions.
The QMB3640 switch is no longer available. There is a 400A circuit breaker device, cat. no. QMB3400LA, which can be retrofitted in its place, in some cases.
Please refer to the latest Supplemental Digest, Section 13 for more information regarding retrofitting.
A plug-on extension assembly, cat. no. QMB310EX, is required. Also, a QW1BL and a QW3BL blank filler would be required. However, these old blank fillers are obsolete, no longer available, with no replacement.
CTA-ID : 2051370