TheABB SD831(Part Number:3BSC610064R1) is a compact, high-efficiency switch-mode power supply designed for SELV (Safety Extra Low Voltage) and PELV (Protective Extra Low Voltage) applications. Delivering a stabilized24 VDC at 3A, it supports a wide range of both AC and DC inputs. Its low heat dissipation and high efficiency (up to 89.8%) make it an ideal choice for powering S800 I/O modules and other sensitive control components in space-constrained industrial environments.
Technical Specifications
Manufacturer: ABB
Type Designation:SD831
Product ID:3BSC610064R1
Nominal Input (AC): 100–240 VAC (±10%)
Nominal Input (DC): 110–300 VDC (-20% / +25%)
Output Voltage: 24 VDC
Rated Output Current: 3 A (3.3 A Maximum)
Rated Output Power: 72 W
Efficiency: 88% (at 115 VAC) / 89.8% (at 230 VAC)
Ripple & Noise: 50 mV peak-to-peak
Hold-up Time: 29 ms (at 115 VAC) / 120 ms (at 230 VAC)
Over Voltage Protection: 39 V
Operating Temperature: Max 55°C
Weight: 0.40 kg
Warranty: 12 Months
Shipping Port: Shanghai, Xiamen
Typical Applications
System 800xA & S800 I/O: Reliable 24V DC power for field communication interfaces and low-density I/O clusters.
Small-Scale Automation: Providing primary power for PLCs, HMI terminals, and field instrumentation.
Redundant DC Grids: Utilizing the 110–300 VDC input capability for integration with battery-backed utility or substation power systems.
SELV/PELV Environments: Specifically rated for applications requiring strict galvanic isolation and safety grounding protocols.
