D461R1-Manual_EN_Rev01 2022_JAN_18 Page 8 to 37
2 Hazardous protection
The safety requirements as determined by EN 1127-1, as well as the corresponding national
regulations, are to be complied with regarding primary explosion protection, i.e. measures which
prevent or restrict the formation of a hazardous explosive atmosphere.
In the case of secondary hazardous protection, i.e. measures that prevent the ignition of an
explosive atmosphere surrounding electrical equipment, the series of standards applicable to
EN 60079 and the relevant national regulations must be observed.
2.1 Relevant technical Data for Hazardous Area
Approved maximum values:
Uo = 8.7 V
Io = 64 mA
Po = 384 mW
Lo = 7.9 mH (IIC)
= 38 mH (IIB)
Co = 5.9 µF (IIC)
= 50 µF (IIB)
2.2 ATEX Certification for Intrinsic Safety of the Input Circuit
II (1) G [Ex ia Ga] IIC
Marking of notified Body: CE0123
EU Type Examination Certificate: CML 15ATEX2128X
2.3 Explosive relevant Certificates / Approvals
2.3.1 ATEX
The isolating barrier series D461R1… is certified according to ATEX EC-Type Examination
Certificate No. CML 15ATEX2128X and is compliant according to ATEX Product Directive
2014/34/EU. Marking see ATEX EU Type Examination Certificate chapter 2.3.7.
2.3.2 IECEx
The isolating barrier series D461R1… is certified according to IECEx Certificate of Conformity
No. CML 15.0063X. Marking see IECEx Certificate of Conformity chapter 2.3.8.
2.3.3 USA (NEC) and Canada (CEC)
The isolating barrier series D461R1… is certified for the USA and Canada according to QPS
Certificate of Conformity No. LR 1323-2. Marking see NEC/CEC Certificate of Conformity
chapter 2.3.9.
2.3.4 EAC Ex
The isolating barrier series D461R1… is approved for EAC (Russia, Kazakhstan and Belarus
Customs Union) according to TR-Certificate No. RU С-DE.ОБ01.B.00175 and TR CU 012/2011.
Marking see EAC Ex TR CU Certificate chapter 2.3.10.
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