DIN rail power supply AMR4-24
Single-phase input: 90 VAC to 264 VAC
Output: 24 VDC (2.5 A)
Operating temperature: -40 °C to +71 °C
Overload and overvoltage protection
- Single-phase input: 90 VAC to 264 VAC
- Output: 24 VDC to 56 °C
- Output power of 60 watts (2.5 A)
- Temperature range from -40 °C to +71 °C
- Robust plastic housing with top-hat rail mounting

The AMR4-24 power supply unit is a high-quality switched-mode power supply unit specially designed for building automation. It impresses with its compact and intelligent top-hat rail design and its robust and compact plastic housing. The output voltage is highly stable even with temperature fluctuations and load changes.
In addition to short-circuit protection, overload and overvoltage protection at the output also ensure a high level of safety.
Input voltage range:
100 VAC to 240 VAC
Nominal input voltage:
90 VAC to 264 VAC or
120 to 375 VDC
Inrush current:
(115 /230 VAC): 30/60 A
Input current:
(115 /230 VAC): 1,100 mA / 600 mA
Internal fuse:
T2 A / 250 VAC
Output voltage:
Factory setting +1 %: 24 VDC
Switch-on delay:
after applying the supply: 1 sec (max.)
Isolation:
Insulation voltage input/output:
3,000 VAC/4,242 VDC
Continuous current:
at 24 VDC < 25 °C (In): 2.5 A (permanent)
Hold-up time:
at 115/230 VAC and 25 °C : typically 12/60 milliseconds
Ripple:
≤ 50 mVpp
efficiency:
≥ 86 % (230 VAC)
Maximum power loss:
9.9 watts at 25 °C (230 VAC)
Overload protection:
110 % to 150 %
Short-circuit protection:
Fold forward mode
Overvoltage protection:
Auto recovery with 30 to 33 VDC
Standards and approvals:
UL 508 Listed / UL 60950-1 Recognized
UL 1310 Class 2 Power Recognized
TÜV EN 60950-1
EN 61000-6-3, EN 55032 Class B
EN 61000-3-2, EN 61000-3-3
EN 61000-6-2, EN 55024
EN 61000-4-2 Level 4, EN 61000-4-3 Level 3
EN 61000-4-4 Level 4, EN 61000-4-5 L-N Level 3
EN 61000-4-6 Level 3, EN 61000-4-8 Level 4
EN 61000-4-11
ENV 50204 Level 2, EN 61204-3
Reliability:
MTBF 662,000 hours
Protection class:
IP20
Housing:
Sturdy plastic housing for mounting in the sub-distribution board.
Mounting on the top-hat rail.
Dimensions (WxHxD):
71 mm x 91 mm x 56.5 mm
Connection:
Screw terminals: AWG24-12 with 0.2 to 2.5 mm² cross-section
Relative humidity:
max. 95 % rH at 25 °C, non-condensing.
Ambient temperature:
Operation: -40 °C to +71 °C
( > 56 °C leads to a reduction of the operating values by 2.5 % / °C )
Storage: -40 °C to +85 °C.
Weight:
approx. 250 g
Scope of delivery:
Device, operating instructions.
Manufacturer:
Chinfa Electronics Ind. Co, Ltd.


