Schneider SR3B261FU Modular Smart Relay, Zelio Logic SR2 SR3, 26 IO, 100-240VAC,

The Schneider Electric SR3B261FU is a Zelio Logic modular programmable relay with 26 I/O, powered by a 100...240 V AC supply. It includes a built-in real-time clock and local display, and supports both Ladder and FBD programming for flexible compact automation in control panels.

Technical specifications:

• Commercial reference: SR3B261FU
• Manufacturer: Schneider Electric
• EAN:
• Series / range: Zelio Logic
• Product type: Modular programmable relay
• Rated supply voltage: 100...240 V AC
• Supply voltage range: 85...264 V AC
• Supply frequency: 50/60 Hz
• Power consumption: 12 VA (without extensions), 17 VA (with extensions)
• Digital inputs: 16, rated 100...240 V AC
• Relay outputs: 10, NO contacts
• Relay output voltage: 5...30 V DC / 24...250 V AC
• Relay output thermal current: 5 A (2 outputs), 8 A (8 outputs)
• Electrical endurance: 500,000 cycles per IEC 60947-5-1
• Rated impulse withstand voltage: 4 kV per IEC 60947-1
• Cycle time: 6...90 ms
• Memory retention: 10 years at 25°C
• Connection: screw terminals, 0.2...2.5 mm²
• IP rating: IP20 (terminal block), IP40 (front panel) per IEC 60529
• Operating temperature: -20...55°C
• Weight: 0.4 kg
• Certifications: UL, CSA, GOST, GL, C-Tick

Features and benefits:

• Dual programming support - Ladder (up to 240 lines) and FBD (up to 500 lines) for flexible logic design
• Built-in real-time clock with local display enabling time-based and standalone operation
• Wide supply tolerance of 85...264 V AC at 50/60 Hz for global deployment
• Relay contacts rated for 500,000 electrical cycles ensuring long service life per IEC 60947-5-1
• Expandable I/O via extension modules for increased installation flexibility

Applications:

• Building automation and HVAC sequencing
• Small machine control and industrial panel logic
• Pump and conveyor sequencing with time-based scheduling
• Lighting control with clock-based programming
• Commercial energy management and load shedding

Compliant with IEC 61131-2, IEC 61000-6-2, IEC 61000-6-4, and IEC 60947-5-1. Part of the Schneider Electric Zelio Logic range.

Also known as: Schneider SR3B261FU, Schneider Electric SR3B261FU, Zelio Logic smart relay, modular logic relay.