PULS QS40.241/QS40.241-C2 models 24V/40A/960W single-phase rail mounted switching power supply

Product Overview

Model: QS40.241, QS40.241-C2 (C2 is a local three proof coating for PCB)

Type: Single phase input, DIN rail installation, industrial grade switching power supply

Core advantages: high efficiency, small size, strong overload capacity, wide temperature range, high reliability

Core electrical parameters (key numbers in bold)

Parameter specifications

Output rated voltage DC 24V, adjustable range 24-28V

Continuous output current of 40A (24V); 34.3A（28V）

Continuous output power of 960W

Short term BonusPower 60A/1440W, lasting for 4 seconds

Peak current of 110A, lasting for 10ms

Input voltage AC 100-240V (range 85-264V)

Efficiency of 94.6% at 230V; 93.6% at 120V

Power factor 0.99 (full voltage range)

Working temperature -25 ℃~+70 ℃, full power within 60 ℃

Size/Weight: 125 × 124 × 127mm/1.9kg

Protection level IP20

Input characteristics

Wide compatibility: AC 100-240V, 50/60Hz, compatible with TN/TT/IT power grid

Surge suppression: Active surge limiting, peak current only 17A (120V)/11A (230V)

Startup characteristics: startup delay of about 700-800ms, overshoot<100mV

Does not support DC input

Output characteristics

Voltage stabilization accuracy: load adjustment rate<50mV, linear adjustment rate<10mV

Ripple noise:<100mVpp (20Hz-20MHz)

Overload mode: HiccupPLUS

Overload<4s: Continuous output

Overload>4s: Stop for about 17s and retry

Short circuit protection: Short circuit current 60-70A, automatic intermittent restart

Control and diagnostic functions

DC-OK relay: output voltage ≥ 90% rated value suction, with 250ms anti vibration

Remote shutdown: external level/switch control, shutdown output<2V

Remote voltage regulation: achieving continuous adjustment of 22-28V by controlling the voltage

Internal data log: records running time, temperature, faults, start stop frequency, and can be read by after-sales service

Status indicator: Green DC OK, Red Overload LED

Protection and Security

Complete protection: overvoltage, overload, short circuit, over temperature, input transient protection

Isolation level: Input/output 2500Vac isolation, SELV/PELV safe low voltage

Protection type: Class I protection, must be reliably grounded (PE)

Leakage current: Maximum 2.25mA at 230V (IT grid)

Environment and Installation

Temperature and humidity: operation -25~70 ℃, storage -40~85 ℃, humidity 5-95% RH, no condensation

Altitude: No capacity reduction within 2000m, with a capacity reduction of 60W for every 1000m above 2000m

Installation method: 35mm DIN rail (EN 60715), with wiring terminals facing downwards for standard installation

Heat dissipation gap: 40mm above, 20mm below, 5mm left and right

Seismic and impact resistance: meets IEC 60068 standard, suitable for ships and vehicles

Certification and Compliance

Safety regulations: UL508, UL60950-1, CCC, KC

Explosion proof: ATEX, IECEx, Class I Div 2/Zone 2

Classification: DNV, ABS certification

EMC: EN 61000-6-2/-4, Class B Conducted Radiation

Environmental Protection: RoHS, REACH, WEEE

Application and Extension

Parallel use: supports multiple current sharing and expansion devices, needs to switch to Parallel mode

Redundant application: Implementing 1+1/N+1 redundancy with YR series redundant modules

Series use: Multiple units connected in series, total voltage ≤ 150V

Battery Charging: Supports lead-acid batteries and can be set to 26.8-27.8V float charging voltage

Buffer Expansion: Combined with UF20.241 to extend power outage duration

Accessories List

Accessory model and purpose

ZM2.WALL wall mounted installation bracket

UF20.241 DC Buffer Module

YR80.242 80A redundant module

YR40.245 40A redundant module

Key issues

Question 1: What are the BonusPower and peak current of this power supply? What is the engineering value?

Answer: BonusPower is 50% additional power (1440W/60A), which can last for 4 seconds; Peak current of 110A, lasting for 10 milliseconds. It can easily start heavy-duty/capacitive loads such as DC motors and contactors, and quickly blow downstream fuses to avoid tripping beyond the level.

Question 2: How can QS40.241 achieve multiple parallel devices? What conditions should be noted?

Answer: Set the front panel jumper to Parallel Use mode to automatically distribute current; Require the same model, consistent output voltage (± 100mV), simultaneous power on, spacing ≥ 15mm, and the addition of 50A – 63A circuit breakers for more than 3 outputs.

Question 3: What are the mandatory requirements for the installation and environment of this power supply? What will happen if you are not satisfied?

Answer: Must be reliably grounded (PE), standard installed (terminal facing down), and have reserved heat dissipation gaps; If the working temperature exceeds * * 60 ℃ * *, the capacity will decrease by 24W per ℃. Non standard installation will significantly shorten the service life, and without grounding, electric shock protection will be lost.