https://www.phoenixcontact.com/us/products/2904945
03/30/2021Page4/8
Power supply unit-STEP-PS/277AC/24DC/3.5-2904945
Technical data
Connection data, output
Conductor cross section AWG min. 24
Conductor cross section AWG max. 12
Stripping length 6.5 mm
Screw thread M3
Standards
EMC requirements for noise immunity EN61000-6-1
EN61000-6-2
EMC requirements for noise emission EN61000-6-3
EN61000-6-4
Standard - Safety of transformers EN61558-2-16
Standard - Electrical safety IEC60950-1/VDE0805 (SELV)
Standard – Electronic equipment for use in electrical power installations
and their assembly into electrical power installations EN50178/VDE0160 (PELV)
Standard – Safety extra-low voltage IEC60950-1 (SELV) and EN60204-1 (PELV)
Standard - Safe isolation DINVDE0100-410
Standard – Protection against shock currents, basic requirements for
protective separation in electrical equipment EN50178
Standard – Limitation of mains harmonic currents EN61000-3-2
Rail applications EN50121-4
Conformance/approvals
UL approvals UL/C-UL listed UL 508
UL/C-UL Recognized UL 60950-1
NEC Class 2 as per UL 1310
EMC data
Electromagnetic compatibility Conformance with EMC Directive 2014/30/EU
Low Voltage Directive Conformance with Low Voltage Directive 2014/35/EC
Electrostatic discharge EN 61000-4-2
Contact discharge 6 kV (Test Level 3)
Discharge in air 8 kV (Test Level 3)
Electromagnetic HF field EN61000-4-3
Frequency range 80 MHz ... 1 GHz
Test field strength 10 V/m
Frequency range 1 GHz ... 2 GHz
Test field strength 10 V/m
Frequency range 2 GHz ... 3 GHz
Test field strength 10 V/m
Comments Criterion A