WSER‑4 POWER SUPPLY 1‑PHASE

IN: 90 ... 264 VAC OUT: 24V/20ADC

Art.No.:

Weight: 0.900 kg Country of origin: CN

Model designation: WSER‑4 20‑100‑240/24

INPUT: 100...240 V AC

OUTPUT: 23...28 V DC

Current: 20 A

Mains failure bridging min.

min. 20 ms (115 V AC); min. 20 ms (230 V AC)

Electrical data
Parallel connection	Yes
Number of devices parallel connection max.	4 (Refer to "2, Parallel Use")
Series connection	Yes
Number of devices series connection max.	2
Electrical data \| Supply
Power frequency	50 ... 60 Hz
Electrical data \| Input
Nominal input voltage AC	100 V … 240 V (90‑100V derating) (Refer to "Static Characteristics")
Input voltage AC min.	100 V
Input voltage AC max.	240 V
Nominal current AC	6 A @ 100 V, 3 A @ 240 V
Inrush current max.	40 A @ 230 V
Input DC Voltage range	110‑250VDC
Power Factor	about 0.99@115VAC, 0.95@230VAC
Efficiency	94.5 % @ 230 V AC (Type)
Characteristic back‑up fuse	Inertia
Fuse protection primary side internal	10 A
Electrical data \| Output
Output voltage adjustable	Yes
Output voltage DC	24 V
Output voltage DC min.	23 V
Output voltage DC max.	28 V
Output current	20 A
Spikes (s‑s) max.	150 mV
Ripple effective max.	100 mV
Power boost	Yes，150% 3s (Refer to "3，Power boost")
Device protection \| Electrical
Degree of protection (EN IEC 60529)	IP20
Overload protection output	Yes
Short‑circuit protection output	Yes
Mechanical data \| Mounting data
Height	125 mm
Width	52 mm
Depth	125 mm
Mounting method	geschnappt
Suitable for mounting type	Mounting rail TH35, (EN 60715)
Environmental characteristics \| Electromagnetic compatibility
Interference emission	IEC 61000‑3‑2
Environmental characteristics \| Climatic
Operating temperature min.	‑25 °C
Operating temperature max.	70 °C
Derating	50 °C (Refer to "Derating Curve")
Ambient temperature (storage, transport)	‑25 °C … 85 °C
Relative humidity (operation)	20 % … 90 %
Additional condition relative humidity	no condensation
MTBF (MIL‑HDBK‑217F)	300000hr+
Conformity
Product standard	EN IEC 61010‑2‑201, UL508

Connection type 2

Family construction form	terminal
No. of poles	3
Gender	female
Color contact carrier	green
Connection	Spring clamp terminals FK
PIN 1	L
PIN 2	N
PIN 3	PE

Family construction form	terminal
No. of poles	4
Gender	female
Color contact carrier	green
Connection	Spring clamp terminals FK
PIN 1	+
PIN 2	+
PIN 3	‑
PIN 4	‑

EMC

EMC EMISSION	Parameter	Standard	Test Level / Note
	Conducted	BS EN/EN55032 (CISPR32)	Class B
	Radiated	BS EN/EN55032 (CISPR32)	Class B
	Harmonic Current	BS EN/EN61000‑3‑2	Class A
EMC IMMUNITY	Parameter	Standard	Test Level / Note
	ESD	EN61000‑4‑2	Level 3, 8KV air ; Level 2, 4KV contact; criteria A
	Radiated	EN61000‑4‑3	Level 3, 10V/m ; criteria A
	EFT / Burst	EN61000‑4‑4	Level 3, 2KV ; criteria A
	Surge	EN61000‑4‑5	Level 3, 1KV/Line‑Line ;Level 3, 2KV/Line‑Line‑Chassis ;criteria A
	Conducted	EN61000‑4‑6	Level 3, 10V ; criteria A
	Magnetic Field	EN61000‑4‑28	Level 4, 30A/m ; criteria A

Derating Curve：

Static Characteristics：

Function Manual

1, DC OK Relay Contact

Contact Close	PSU turns ON / DC OK.
Contact Open	PSU turns OFF / DC Fail.
Contact Ratings (max.)	30Vdc/1A, 30Vac/0.5A resistive load.

2, Parallel Use

ECO RAIL 4 20‑100‑240/24 has the built‑in parallel function and can be connected in parallel, up to 4 units, to provide higher output power.

3，Power boost

Gradually adjust the power supply's output current. When the current reaches between 22A and 30A, the power supply should sustain this level for 3 seconds before entering protection mode; record the current value at this point. After protection, wait approximately 6 seconds for the power supply to automatically restart. If the load current remains above 22A but below or equal to 30A after restart, the power supply will again maintain operation for 3 seconds before re‑entering protection mode. This cycle will continue until the current drops below 22A, at which point the power supply will resume normal operation.