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Schneider Electric SR3B101B

Schneider SR3B101B Zelio Logic Smart Relay, RTC, 24 VAC

MPNSR3B101B
Active

Schneider Electric, Zelio Logic series, modular smart relay SR3B101B, with real-time clock, 6 discrete inputs, relay outputs, 24 V AC supply.

$78.74Ref. price · indicative, final on quote
Schneider Electric SR3B101B datasheet (PDF)
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MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

SR3B101B key specifications
ParameterValue
Protection typeAgainst inversion of terminals (control instructions not executed)
Range of productZelio Logic
Product or component typeModular smart relay
Isolation voltage1780 V
Supply voltage limits20.4...28.8 V
Discrete input voltage24 V AC
Supply voltage24 V
Voltage state 0 guaranteed= 2 mA discrete input)
Voltage state 1 guaranteed>= 14 V discrete input
[Uimp] rated impulse withstand voltage4 kV EN/IEC 60947-1 and EN/IEC 60664-1
Discrete input current4.4 mA
Maximum supply current160 mA without extension) 280 mA with extensions)

All specifications

SR3B101B additional specifications
ParameterValue
Current state 0 guaranteed= 10 mA 12 V relay output)
Power consumption in4 VA without extension 7.5 VA with extensions
Supply frequency50/60 Hz
Operating rate in0.1 Hz at Ie)relay output 10 Hz no load)relay output
Discrete input frequency57...63 Hz 47...53 Hz
IP degree of protectionIP20 IEC 60529 terminal block) IP40 IEC 60529 front panel)
Connections - terminalsScrew terminals, 1 x 0.2...1 x 2.5 mm² AWG 25...AWG 14) semi-solid Screw terminals, 1 x 0.2...1 x 2.5 mm² AWG 25...AWG 14) solid Screw terminals, 1 x 0.25...1 x 2.5 mm² AWG 24...AWG 14) flexible with cable end Screw terminals, 2 x 0.2...2 x 1.5 mm² AWG 24...AWG 16) solid Screw terminals, 2 x 0.25...2 x 0.75 mm² AWG 24...AWG 18) flexible with cable end
Response time50 ms ladder from state 0 to state 1)discrete input 50 ms ladder from state 1 to state 0)discrete input 50...255 ms FBD from state 0 to state 1)discrete input 50...255 ms FBD from state 1 to state 0)discrete input 10 ms from state 0 to state 1)relay output 5 ms from state 1 to state 0)relay output
Pollution degree2 IEC 61131-2
Relative humidity95 % without condensation or dripping water
Operating altitude6561.68 ft (2000 m)
Maximum altitude transport10000 ft (3048 m)
Mechanical durability10000000 cycles relay output
StandardsIEC 61000-4-2 level 3 IEC 61000-4-5 IEC 61000-4-12 IEC 61000-4-4 level 3 IEC 60068-2-6 Fc IEC 61000-4-6 level 3 IEC 61000-4-11 IEC 61000-4-3 IEC 60068-2-27 Ea
ClockWith
ChecksProgram memory on each power up
CategoryUS1000I22378
Cycle time6...90 ms
Backup time10 years 77 °F (25 °C)
Clock drift12 min/year 32...131 °F (0...55 °C) 6 s/month 77 °F (25 °C)
Local displayWith
Tightening torque4.4 lbf.in (0.5 N.m)
Overvoltage categoryIII conforming to IEC 60664-1
Discrete input number6
Immunity to microbreaks10 ms repeated 20 times
Environmental characteristicEMC directive conforming to IEC 61000-6-2 EMC directive conforming to IEC 61000-6-3 EMC directive conforming to IEC 61000-6-4 EMC directive conforming to IEC 61131-2 zone B Low voltage directive conforming to IEC 61131-2
Disturbance radiated (conducted)Class B EN 55022-11 group 1
Number or control scheme lines0...500 FBD 0...240 ladder
Ambient air temperature for storage-40...158 °F (-40...70 °C)
Ambient air temperature for operation-4...104 °F (-20...40 °C) in non-ventilated enclosure IEC 60068-2-1 and IEC 60068-2-2 -4...131 °F (-20...55 °C) IEC 60068-2-1 and IEC 60068-2-2

Product details

Fit and scheduling constraints

The SR3B101B is a Zelio Logic smart relay with a built-in real-time clock that holds schedule timing down to 6 s/month drift at 77°F (25°C) — tight enough for weekly time-based logic without external sync. The 10-year backup at the same temperature keeps the clock and program memory through extended power outages; no battery replacement hits the maintenance window. Cycle time runs 6…90 ms in ladder, fast enough for simple sequences and interlock loops on a process skid or small panel.

Installation integration notes

Rated supply is 24 V AC (20.4…28.8 V, 50/60 Hz). Power draw: 4 VA without extension modules, 7.5 VA with. Screw terminals accept 1 x 0.2…2.5 mm² solid or flexible with ferrule. IP40 front panel, IP20 on terminals. Isolation voltage 1780 V. 6 discrete inputs at 24 V AC, 4.4 mA each. Relay output mechanical durability 10 million cycles.

Frequently asked questions

What is the real-time clock accuracy and backup?

Clock drift is 6 s/month at 77°F (25°C), or 12 min/year over 32…131°F (0…55°C). Backup time is 10 years at 77°F, so the clock holds through power loss without battery service during a typical panel life.

What compliance standards does SR3B101B meet?

The relay meets IEC 61000-4-2 level 3 (ESD), IEC 61000-4-4 level 3 (burst), IEC 61000-4-5 (surge), IEC 61000-4-12 (ring wave), IEC 61000-4-11 (dips), and others. Also conforms to EMC directives IEC 61000-6-2, -6-3, -6-4, and Low Voltage directive per IEC 61131-2.

MPN
SR3B101B