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Schneider Electric SR2B121JD

Schneider SR2B121JD Zelio Logic PLC, 12 I/O, 12 V DC

MPNSR2B121JD
Active

Schneider SR2B121JD Controllers Programmable (Plc, Pac) — now discontinued. Supplied from remaining channel stock; full specifications, lifecycle and same-series options are below.

$77.47Ref. price · indicative, final on quote
Schneider Electric SR2B121JD datasheet (PDF)
StockContact for availability
MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

SR2B121JD key specifications
ParameterValue
Range of productZelio Logic
Discrete input typeResistive
Product or component typeCompact smart relay
Supply voltage limits10.4...14.4 V
Discrete input voltage12 V DC
Supply voltage12 V DC
Voltage state 0 guaranteed= 2 mA I1...IA and IH...IR discrete input circuit) >= 0.5 mA IB...IG used as discrete input circuit)
Voltage state 1 guaranteed>= 7 V IB...IG used as discrete input circuit >= 5.6 V I1...IA and IH...IR discrete input circuit
[Uimp] rated impulse withstand voltage4 kV EN/IEC 60947-1 and EN/IEC 60664-1
Discrete input current4 mA
Maximum supply current120 mA without extension)
Current state 0 guaranteed= 10 mA 12 V relay output)

All specifications

SR2B121JD additional specifications
ParameterValue
Power dissipation in1.5 W without extension
Counting frequency1 kHz discrete input
Operating rate in0.1 Hz at Ie)relay output 10 Hz no load)relay output
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 time10 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 61000-4-11 IEC 60068-2-6 Fc IEC 61000-4-12 IEC 61000-4-2 level 3 IEC 61000-4-5 IEC 61000-4-3 IEC 61000-4-4 level 3 IEC 60068-2-27 Ea IEC 61000-4-6 level 3
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 number8 IEC 61131-2 Type 1
Immunity to microbreaks1 ms repeated 20 times
Reverse polarity protectionWith
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...240 ladder 0...500 FBD
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

Overview

The SR2B121JD is a Schneider Electric Zelio Logic smart relay, order code SR2B121JD, offering 12 I/O points (8 digital, 4 analog) and 4 relay outputs. It operates on a 12 V DC supply and is rated IP20 for DIN-rail mounting in control cabinets.

Applications

As a compact smart relay, the SR2B121JD is suited for small-scale automation tasks such as lighting control, HVAC management, and simple machine sequencing.

The integrated real-time clock enables time-based scheduling, while the program memory check on each power-up ensures control logic integrity. Cycle time ranges from 6 to 90 ms, supporting typical response requirements for relay-logic replacement.

Compliance

The SR2B121JD meets IEC 61000-4-2 level 3, IEC 61000-4-4 level 3, and IEC 61000-4-6 level 3 EMC immunity, and carries CSA, C-Tick, GL, GOST, and UL certifications.

MPN
SR2B121JD