PULS SP960.241-SR PLANET DIN Rail Power Supply, 24V 40A 960W, 1-Phase, Built-in Decoupling for Redundancy

The PULS SP960.241-SR is a 960 W, 24 VDC, 40 A single-phase DIN rail power supply from the PULS PLANET SP series, built for redundant power systems. Built-in, energy-efficient MOSFET decoupling on the output means two units can be paralleled for redundancy without a separate redundancy module, and a faulty unit cannot become a load on the healthy one. Dynamic BonusPower delivers 1152 W continuously up to +45 °C and 1440 W for up to 5 seconds up to +70 °C, so motor starts, solenoid banks, and capacitive loads are covered without oversizing the supply.

Key Features

• Built-in decoupling for redundancy: integrated MOSFET decoupling on the output, no external diode or redundancy module required
• Dynamic BonusPower Management: 120% (1152 W) continuous up to +45 °C, 150% (1440 W) for 5 s up to +70 °C, repeatedly available with short recovery times
• High efficiency: 96.2% at 230 Vac and 94.9% at 120 Vac (24 V, 40 A), with only 3.6 W no-load losses at 120 Vac
• Compact 96 mm width for a 960 W unit, convection cooled with no fan
• Enhanced Hiccup^PLUS overload protection protects both the connected system and the power supply
• 80 A fuse breaking current (up to 12 ms) helps trip fuses on faulty output branches while the output stays above 20 V
• DC OK relay contact and DC OK LED for remote diagnostics and per-unit monitoring in redundant systems
• Parallel Use / Single Use link for load sharing when paralleling units to increase output power
• Hazardous location rated: Class I Division 2 Groups A, B, C, D and ATEX / IECEx Zone 2
• 3-year PULS warranty

Technical Specifications

Redundancy Without the Extra Module

The "-SR" in SP960.241-SR stands for the built-in redundancy decoupling. In a conventional redundant 24 VDC system, two power supplies feed a separate redundancy module so that a failed unit cannot pull down the bus. The SP960.241-SR moves that MOSFET decoupling inside the power supply, which saves DIN rail space, wiring, and a component in the bill of materials while keeping losses low.

For a redundant build, PULS recommends separate input fuses for each unit and monitoring each supply through its own DC OK relay contact, so a failed unit is flagged before the system loses its backup.

Typical Applications

• Redundant 24 VDC control power for PLCs, I/O, and safety systems where downtime is not acceptable
• Machine and panel builds with high inrush or peak loads, such as motors, brakes, and solenoid valve banks
• Process control and monitoring equipment in Class I Division 2 and Zone 2 hazardous locations
• Semiconductor processing equipment requiring SEMI F47 voltage sag immunity
• Charging 24 V lead-acid (SLA / VRLA) battery systems with no external blocking diode required

Approvals and Standards

cULus Listed to UL 61010-2-201 (E198865); CB Scheme to IEC 61010-2-201 and IEC 62368-1; ATEX (EPS 25 ATEX 1 144 U) and IECEx (IECEx EPS 25.0040U) for Zone 2; Class I Division 2 Groups A, B, C, D; SELV / PELV; IEC 61558-2-16; SEMI F47; Class B conducted and radiated emissions; CE, REACH, and RoHS.

Complementary PULS Units