STEP-PS/277AC/24DC/3.5 - Power supply unit

2904945

DIN rail power supply unit 24 V DC/3.5 A, primary switched-mode, 1-phase.

Product details

Product description

AC operation
Nominal input voltage range	100 V AC ... 277 V AC
Input voltage range	85 V AC ... 305 V AC
	95 V DC ... 250 V DC
Input voltage range AC	85 V AC ... 305 V AC
Input voltage range DC	95 V DC ... 250 V DC
Voltage type of supply voltage	AC/DC
Inrush current	< 40 A (typical)
Inrush current integral (I²t)	< 2.8 A²s
AC frequency range	45 Hz ... 65 Hz
Frequency range DC	0 Hz
Mains buffering time	typ. 25 ms (120 V AC)
	typ. 160 ms (277 V AC)
Current consumption	1.43 A (120 V AC)
	0.75 A (277 V AC)
Nominal power consumption	147.7 VA
Power factor (cos phi)	0.64
Typical response time	< 0.5 s
Input fuse	4 A (slow-blow, internal)
Permissible backup fuse	B6 B10 B16
Recommended breaker for input protection	6 A ... 16 A (Characteristics B, C, D, K)

Efficiency	> 88 % (for 277 V AC and nominal values)
Output characteristic	U/I
Nominal output voltage	24 V DC ±1 %
Setting range of the output voltage (U_Set)	22.5 V DC ... 25 V DC (> 24 V DC, constant capacity restricted)
Output current I_max	6 A
Nominal output current (I_N)	3.5 A (-25 °C ... 55 °C)
Derating	55 °C ... 70 °C (2.5 %/K)
Feedback voltage resistance	≤ 35 V DC
Protection against overvoltage at the output (OVP)	< 35 V DC
Control deviation	< 1 % (change in load, static 10 % ... 90 %)
	< 2 % (change in load, dynamic 10 % ... 90 %)
	< 0.1 % (change in input voltage ±10 %)
Residual ripple	< 10 mV_PP (20 MHz)
Output power	84 W
Peak switching voltages nominal load	< 30 mV_PP (20 MHz)
Maximum no-load power dissipation	< 0.6 W
Power loss nominal load max.	11.5 W
Rise time	< 0.5 s (U_OUT (10 % ... 90 %))
Connection in series	yes

Input
Connection method	Screw connection
Conductor cross section, rigid min.	0.2 mm²
Conductor cross section, rigid max.	2.5 mm²
Conductor cross section flexible min.	0.2 mm²
Conductor cross section flexible max.	2.5 mm²
Conductor cross section AWG min.	24
Conductor cross section AWG max.	12
Stripping length	6.5 mm
Screw thread	M3
Tightening torque, min	0.5 Nm
Tightening torque max	0.6 Nm
Output
Connection method	Screw connection
Conductor cross section, rigid min.	0.2 mm²
Conductor cross section, rigid max.	2.5 mm²
Conductor cross section flexible min.	0.2 mm²
Conductor cross section flexible max.	2.5 mm²
Conductor cross section AWG min.	24
Conductor cross section AWG max.	12
Stripping length	6.5 mm
Screw thread	M3
Tightening torque, min	0.5 Nm
Tightening torque max	0.6 Nm

Types of signaling	LED
Operating voltage display	Green LED
Signal output: LED status indicator
Status display	"DC OK" LED green
Note on status display	U_OUT > 21.5 V: LED lights up

Number of phases	1.00
Insulation voltage input/output	4 kV AC (type test)
	3.75 kV AC (routine test)
	3.75 kV AC (routine test)
	4 kV AC (type test)

Product type	Power supply
Product family	STEP POWER
MTBF (IEC 61709, SN 29500)	> 1094000 h (40 °C)
Insulation characteristics
Protection class	II
Overvoltage category	III
Degree of pollution	2

Width	90 mm
Height	90 mm
Depth	61 mm
Horizontal pitch	5 Div.
Installation dimensions
Installation distance right/left	0 mm / 0 mm
Installation distance top/bottom	30 mm / 30 mm

Mounting type	DIN rail mounting
Assembly note	alignable: 0 mm horizontally, 30 mm vertically
Mounting position	horizontal DIN rail NS 35, EN 60715
With protective coating	no

Housing material	Plastic
Housing material	PC
Foot latch material	POM (Polyoxymethylene)

Ambient conditions
Degree of protection	IP20
Ambient temperature (operation)	-25 °C ... 70 °C (> 55° C derating : 2.5%/K)
Ambient temperature (storage/transport)	-40 °C ... 85 °C
Climatic class	3K3 (in acc. with EN 60721)
Max. permissible relative humidity (operation)	≤ 95 % (at 25 °C, non-condensing)
Shock	18 ms, 30g, in each space direction (according to IEC 60068-2-27)
Vibration (operation)	< 15 Hz, amplitude ±2.5 mm (according to IEC 60068-2-6)
	15 Hz ... 150 Hz, 2.3g, 90 min.

Rail applications	EN 50121-4
Standard – Electronic equipment for use in electrical power installations and their assembly into electrical power installations	EN 50178/VDE 0160 (PELV)
Standard – Limitation of mains harmonic currents	EN 61000-3-2
Standard - Electrical safety	IEC 62368-1 (SELV)
Standard – Protection against shock currents, basic requirements for protective separation in electrical equipment	EN 50178
Standard – Safety extra-low voltage	IEC 62368-1 (SELV) und EN 60204-1 (PELV)
Standard - Safe isolation	DIN VDE 0100-410
Standard - Safety of transformers	EN 61558-2-16

UL approvals	UL/C-UL listed UL 508
	UL/C-UL Recognized UL 60950-1
	NEC Class 2 as per UL 1310
Conformity/Approvals
SIL in accordance with IEC 61508	0

Electromagnetic compatibility	Conformance with EMC Directive 2014/30/EU
Low Voltage Directive	Conformance with Low Voltage Directive 2014/35/EC
EMC requirements for noise emission	EN 61000-6-3
	EN 61000-6-4
EMC requirements for noise immunity	EN 61000-6-1
	EN 61000-6-2
Electrostatic discharge
Standards/regulations	EN 61000-4-2
Electrostatic discharge
Contact discharge	6 kV (Test Level 3)
Discharge in air	8 kV (Test Level 3)
Comments	Criterion B
Electromagnetic HF field
Standards/regulations	EN 61000-4-3
Electromagnetic HF field
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
Fast transients (burst)
Standards/regulations	EN 61000-4-4
Fast transients (burst)
Input	4 kV (Test Level 4 - asymmetrical)
Output	2 kV (Test Level 3 - asymmetrical)
Comments	Criterion B
Surge voltage load (surge)
Standards/regulations	EN 61000-4-5
Surge voltage load (surge)
Input	1 kV (Test Level 2 - symmetrical)
	2 kV (Test Level 3 - asymmetrical)
Output	0.5 kV (Test Level 1 - symmetrical)
	0.5 kV (Test Level 1 - asymmetrical)
Comments	Criterion B
Conducted interference
Standards/regulations	EN 61000-4-6
Conducted interference
Frequency range	10 kHz ... 15 kHz
	10 kHz ... 15 kHz
Comments	Criterion A
	Criterion A
Voltage	3 V (Test Level 2)
	3 V (Test Level 2)
Conducted interference
Frequency range	10 kHz ... 15 kHz
	10 kHz ... 15 kHz
Comments	Criterion A
	Criterion A
Voltage	3 V (Test Level 2)
	3 V (Test Level 2)
Voltage dips
Standards/regulations	EN 61000-4-11
Emitted interference
Standards/regulations	EN 61000-6-3
Radio interference voltage in acc. with EN 55011	EN 55011 (EN 55022) class B used in industry and residential area / EMC 1
Emitted radio interference in acc. with EN 55011	EN 55011 (EN 55022) class B used in industry and residential area / EMC 1

Commercial data

Item number	2904945
Packing unit	1 pc
Minimum order quantity	1 pc
Product key	CMPS93
Catalog page	Page 281 (C-4-2019)
GTIN	4046356903875
Weight per piece (including packing)	396.5 g
Weight per piece (excluding packing)	379 g
Customs tariff number	85044095
Country of origin	VN

Classifications

Approvals

Environmental product compliance

Compatible products

Accessories

Your advantages

Flexible mounting by simply snapping onto the DIN rail or screwing onto a level surface

Reliable power supply thanks to high MTBF (mean time between failures) of more than 500,000 hours and U/I characteristic curve

Energy savings thanks to maximum energy efficiency and incredibly low idling losses

ECLASS-13.0	27040701
ECLASS-12.0	27040701

EU RoHS
Fulfills EU RoHS substance requirements	Yes
Exemption	7(a), 7(c)-I
China RoHS
Environment friendly use period (EFUP)	EFUP-25 An article-related China RoHS declaration table can be found in the download area for the respective article under "Manufacturer declaration". For all articles with EFUP-E, no China RoHS declaration table issued and required.
EU REACH SVHC
REACH candidate substance (CAS No.)	Lead (CAS: 7439-92-1)
SCIP	a73483c2-20ce-4947-add3-4ab2dffd74ac
EF3.0 Climate Change
CO2e kg	10.724 kg CO2e

Automate

Connect

Mark, assemble, and install

Supply, charge, and protect

Switch, Measure and Monitor

STEP-PS/277AC/24DC/3.5 - Power supply unit

2904945

Product details

ECLASS

ETIM

UNSPSC

BIS Licence Document

cUL Recognized

UL Recognized

IECEE CB Scheme

EAC

IECEE CB Scheme

UL Listed

cUL Listed

UL Recognized

EAC

cUL Recognized

cUL Listed

UL Listed

IECEE CB Scheme

IECEE CB Scheme

BIS Licence Document

Compatible products

Your advantages

Automate

Connect

Mark, assemble, and install

Supply, charge, and protect

Switch, Measure and Monitor

STEP-PS/277AC/24DC/3.5 - Power supply unit 2904945

Product details

ECLASS

ETIM

UNSPSC

Compatible products

PLT-SEC-T3-24-FM-UT - Type 3 surge protection device 2907916

Your advantages

STEP-PS/277AC/24DC/3.5 - Power supply unit

2904945