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CI EI (210-420 series), Contactors with interface relay

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Which type of thermal overload relay should I choose for contactor CI 20?
- Answer: Please find below thermal overload relay range and related contactors: •TI 9C-5 – fits CI 5- ; Range 0.1-9.2 Amp. •TI 16C – fits CI 6 – CI 16; Range 0.1-16 Amp. •TI 25C – fits CI 20-CI 25; Range 15-25 Amp. •TI 30C – fits CI 30; Range 24-32 Amp. •TI 80 - fits CI 32 –50; Range 16 – 63 Amp. •TI 80 - fits CI 61 –86; Range 42-80 Amp. •TI 86 - fits CI 61-86; Range 74-85 Amp. TI 25C is dedicated for CI 20.
How can the operation of the CI 210 EI coil be controlled?
- Answer: The operation of the coil can be controlled in two ways by an electronic circuit: I. "EI" Interface mode II. "E" Standard mode The location of the joint is essential and it determines the way in which the coil is controlled. It means that you can operate contactor from a PLC when you use "EI" Interface mode. It works like this: Until you supply 24V DC on B+ B- the coil is de-energised although there is supplied net voltage on A1 A2.