SIEMENS
Siemens 6EP1437-2BA20 SITOP PSU300S 24V 40A 960W Power Supply
Siemens 6EP1437-2BA20 SITOP PSU300S 24V 40A 960W Power Supply
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High-efficiency DIN rail power supply for demanding 24V DC industrial systems, converting 400-500V three-phase AC to a reliable 24V DC output with overload protection and global certifications.
The Siemens 6EP1437-2BA20 is a SITOP PSU300S three-phase stabilized power supply. It converts 3AC 400-500 V input into a regulated 24 V DC output capable of delivering 40 A continuously. With up to 95% efficiency, the natural convection-cooled design operates in a wide temperature range and is suited for factory automation, machine building, and process control systems worldwide.
Applications
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Powering PLCs, HMIs, industrial drives, actuators, and sensors
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Factory automation lines, packaging machinery, and HVAC controls
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Machine building, process automation, and safety‑related control systems
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Conveyor systems, industrial robots, and power distribution panels
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With redundant or buffered configurations (using optional SITOP modules)
Key Features
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400–500 V AC wide-range 3-phase input (340‑550 V AC operating range)
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24 V DC output adjustable from 24 to 28 V DC via front potentiometer
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40 A continuous output current, 960 W total power
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150% power boost handles temporary high loads, 120% permanent overload capacity
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High efficiency up to 95% reduces heat generation in the cabinet
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LED status indicator and relay signaling contact for remote diagnostics
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Natural convection cooling, IP 20 protection, DIN rail mounting
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Adjustable output voltage can compensate for voltage drops on long cable runs
Technical Specifications
| Parameter | Value |
|---|---|
| Brand | Siemens |
| Model | 6EP1437-2BA20 |
| Series | SITOP PSU300S |
| Input Voltage | 3AC 400‑500 V ±10% (340‑550 V operating) |
| Input Frequency | 47‑63 Hz |
| Output Voltage | 24 V DC (adjustable 24‑28 V) |
| Output Current | 40 A continuous |
| Output Power | 960 W |
| Efficiency | Up to 95% |
| Overload Capacity | 150% for 5 s/min; 120% continuous up to +45°C |
| Protection | Short‑circuit, overload, overvoltage |
| Status Indication | Green LED + relay contact (NO) for "24 V OK" |
| Cooling | Natural convection |
| Mounting | 35 mm DIN rail |
| Dimensions (W × H × D) | 150 × 145 × 150 mm |
| Weight | 3.1‑3.7 kg (depending on configuration) |
| Operating Temperature | -25°C to +70°C (with derating) |
| Protection Rating | IP20 |
| Certifications | CE, UL, cUL, RoHS (since March 2011) |
| Country of Origin | Romania |
System Integration
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PLC Controllers: SIMATIC S7‑1200, S7‑1500 via SITOP SELECT selectivity module
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Networks: Integrates with SITOP DC‑UPS and SITOP RED redundancy modules
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Operation: Parallel connection capability (2 units max) for increased power or redundancy
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Compatibility: SELV per EN 60950‑1, galvanic isolation
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External Circuit Protection: Requires 3‑pole MCB (10‑16 A, characteristic C; Siemens 3RV2011‑1DA10 recommended)
Related Products
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Redundancy Module: Siemens 6EP1961‑2BA00 – SITOP RED redundancy module
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Buffer Module: Siemens 6EP1931‑2DC21 – SITOP DC‑UPS for short‑term buffering
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Selectivity Module: Siemens 6EP1964‑2BA00 – SITOP SELECT for 4‑channel load monitoring
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Controller Power Supply: Siemens 6EP1332‑2BA20 – 24V DC / 4.5 A D.C. (slim design)
PLC ERA is an independent industrial automation distributor. Products are sourced from established supply channels and inspected before shipment. International shipping available.
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