Description of the CBMC E4 24DC/1-4A+ IOL and CBMC E4 24DC/1-10A IOL
108147_en_00 PHOENIX CONTACT 9 / 44
3 Description of the CBMC E4 24DC/1-4A+ IOL and
CBMC E4 24DC/1-10A IOL
3.1 General description of the device circuit breaker
The CBMC E4 ... IOL is a multi-channel device circuit breaker with the possibility of setting
the nominal current. It is used to protect downstream consumers against overload and short
circuit. Using the integrated IO-Link interface also makes possible comprehensive diagno-
sis and control of the device.
Figure 3-1 CBMC E4 ... IOL
24 V DC power terminal For the device circuit breaker, observe the correct connection cross section and the maxi-
mum feeding current with regard to the ambient temperature. A corresponding temperature
derating can be found in Section "Technical data" under "Derating" on page 34.
IO-Link connection The integrated IO-Link connection according to IO-Link standard 1.1 ensures the connec-
tion to the IO-Link master. With the help of the IO-Link protocol, it is possible to receive and
send the cyclic and acyclic data of the device circuit breaker (see Section 5 "Process data
and status information").
The CBMC Circuit Breaker Multichannel Compact CBMC E4 24DC/1-4A+ IOL and
CBMC E4 24DC/1-10A IOL are identical in appearance. They only differ with regard to a
function. In the following, the term device circuit breaker or CBMC E4 ... IOL is therefore
generally used. Any differences are indicated in the corresponding sections of the text, if
necessary.
The device circuit breaker CBMC E4 24DC/1-4A+ IOL is approved for use in NEC Class 2
circuits and adjustable to 4 A.
All the latest approvals can be found on the Internet at
phoenixcontact.net/products
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