6EP1437-3BA00 Siemens Power Supply SITOP Modular 3P 24VDC 40A

6EP1437-3BA00 Siemens Power Supply SITOP Modular 3P 24VDC 40A

1.Overview of the 6EP1437-3BA00 Siemens

The Siemens 6EP1437-3BA00, part of the SITOP modular series, is a DIN rail-mounted switch-mode power supply with a three-phase 380–550 V AC input and a 24 V DC/40 A output. It offers a continuous power output of 960 W and an efficiency of up to 90%. Its narrow 240 mm housing requires no clearance for installation and allows full power operation in industrial environments ranging from –25°C to +70°C. It features built-in soft start, zero overshoot, and supports a transient overload of 120%/5 s. Two units can be directly paralleled to achieve 1920 W redundancy or capacity expansion. The power supply features multiple protections: overvoltage <35 V, 46 A constant overcurrent, short-circuit lockout, and overtemperature derating. Furthermore, a "DC OK/Fault" dry contact output is available via the 6EP1961-3BA10 signal module, facilitating connection to a PLC, HMI, or remote monitoring system. A potentiometer on the front allows fine-tuning between 24 and 28.8 V to compensate for voltage drops over long cables. A green LED on the top provides real-time output status, making maintenance intuitive and quick. This product is CE, UL, CSA, ATEX (Zone 2), and SEMI F47 certified. It is suitable for applications requiring the highest reliability and energy efficiency, such as automated production lines, process control, packaging machinery, logistics, and machine tools. It is an ideal regulated power supply for 24 V fieldbuses, servo drives, solenoid valves, and PLC systems.

2.Core Features:

Siemens 6EP1437-3BA00
SITOP modular three-phase 24 V/40 A DIN rail power supply

I. Core Positioning
This 960 W high-performance DIN rail switching power supply provides a regulated, redundant, and parallel-compatible power supply solution for 24 V automation systems, servo drives, solenoid valves, and fieldbuses.

II. Main Specifications
Order Number: 6EP1437-3BA00
Series: SITOP modular
Input voltage: 320…550 V 3 AC (wide-range 380 V ±15% compatible)
Input frequency: 50/60 Hz, range: 45…65 Hz
Rated output: 24 V DC / 40 A
Output power: 960 W
Adjustable output: 24…28.8 V (front panel potentiometer)
Efficiency: 90% (full load, 400 V input)
Power loss: ≈ 106 W (full load)
Ripple & noise: ≤ 100 mVpp (0…20 MHz)
Dynamic response: ±2% (50→100% step, recovery: 4 ms)
Startup delay: ≤ 2.5 s; voltage ramp: 500 ms (soft start, no overshoot)
Overload capacity: 1.2× 48 A continuous; 1.5 x 60 A 5 s/min; short-circuit constant current 46 A (switchable latching shutdown)
Parallel expansion: Supports direct parallel connection of two units (no current-sharing inductor required)
Isolation: Input/output 500 V AC (SELV)
Protection/Monitoring: OVP < 35 V; OCP/SCP constant current or latching; OTP with derating + red LED
Status Indicators: Green "24 V OK" LED; Yellow "Overload" LED; Red "Locked Shutdown" LED
Signal Module: Plug-in 6EP1961-3BA10 (DC-OK, dry contact, remote shutdown)
Operating Temperature: –25 … +70 °C (> 60 °C, derating 2%/K)
Storage Temperature: –40 … +85 °C
Altitude: Rated 4000 m (> 2000 m, derating)
Lifespan/Reliability: MTBF 485,000 h @ 40°C
Enclosure/Mounting: 240 × 125 × 125 mm (W × H × D), aluminum profile, 35 mm DIN rail, clearance-free on both sides
Terminals: Screw-type, maximum 6 mm², torque 0.5 Nm
Weight: 3.2 kg
Protection Rating: IP20 (for cabinet installation)
Certifications: CE, UL 508 Listed, CSA, SEMI F47, RCM, EAC

III. Feature Highlights: Wide input range of 320…550 V AC, compatible with 380 V, 400 V, 415 V, and 480 V three-phase grids, for global compatibility.
Soft start and zero overshoot eliminate the risk of upper-level PLC/servo system disconnection due to surges.
90% high efficiency, low cabinet temperature rise, no clearance required between adjacent modules.
1.5 times peak power, 60 A/5 s, capable of directly starting high-power motor brakes and solenoid valves. Two short-circuit modes (constant current/latching) accommodate capacitive cable loads or battery charging. Parallel expansion: two units can provide 1920 W or 1+1 redundancy, eliminating the need for a current-sharing busbar. Hot-swappable signal modules provide DC-OK dry contacts, remote shutdown, and IO-Link communication. -25°C cold start capability makes it suitable for harsh environments such as cold storage, wind power plants, and plateaus. UL/CSA/SEMI F47 certifications cover semiconductors, machine tools, and food machinery. A three-color LED and digital terminals on the top provide easy on-site fault identification, ensuring maintenance time of less than 1 minute.

IV. Typical Applications

24 V bus provides centralized power for S7-1500, ET200SP, inverters, and servo drives. Applications with high peak power loads, such as packaging machines, robots, and laser cutting machines. Applications requiring 1+1 redundancy or hot-swappable automotive welding lines requiring non-stop operation. Semiconductor equipment must comply with SEMI F47. Voltage drop tolerance
Battery charging/DC motor test bench, using constant current characteristics to limit current operation

3.Product details pictures

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