Mbb contacts is an abbreviation for make before break contacts.
Make before break relay allen bradley.
General purpose relays feature an excellent fl exible design and industry proven reliability.
Using an adapter plate you can also mount it for standalone use.
Allen bradley relays and timers are part of rockwell automation s essential components line.
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.
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.
Learn more about how these industrial building blocks can streamline your installation improve uptime and decrease maintenance ultimately helping lower your costs.
Bulletin 700 ps solid state timing relays are accurate solid state timers that can be mounted on 4 pole bulletin 700 p pk r or rm relays and on 2 pole bulletin 700 ph relays.
These are also called continuous contacs did this article help you to solve your problem.
This is outlined in ansi b11 19 and en.
Additionally if a nc contact fails to open upon energizing the relay the no contacts shall not close.