Relays with mbb contacts have an overlapping mechanism where the no contacts close before the nc contacts open.
Make before break relay allen bradley.
Additionally if a nc contact fails to open upon energizing the relay the no contacts shall not close.
Allen bradley relays and timers are part of rockwell automation s essential components line.
These relays are ideal for relatively small safety applications and single zone control and available in electromechanical version or solid state models for applications involving high cycle rates.
Mbb contacts is an abbreviation for make before break contacts.
These are also called continuous contacs did this article help you to solve your problem.
Relays of this type have contacts that are mechanically connected together such that if a normally open no or make contact remains closed a normally closed nc or break contact can not re close.
Our msr100 single function safety relays support a wide variety of input devices and output configurations.
Using an adapter plate you can also mount it for standalone use.
This is outlined in ansi b11 19 and en.
Allen bradley relays and timers off er compatible and versatile solutions for control applications from programmable controllers and motor starters to push buttons and terminal blocks.