cBallast
Industrial Parts Catalog
Datasheet generated 2026-10-07
sales@cballast.com
cballast.com

Schneider Electric compact smart relay Zelio Logic - 12 I O - 24 V AC - clock - no display SR2E121B

Schneider Electric · Control & Automation · PLCs · France · se.com
Part Number
SR2E121B  ·  HS 8536.90
Schneider Electric compact smart relay Zelio Logic - 12 I O - 24 V AC - clock - no display SR2E121B

Schneider Electric SR2E121B Zelio 8/4 In/O relay without display with ur 24VAC.

Technical Specifications

Manufacturer part number (MPN)SR2E121B
EAN / GTIN3389110549799
HS code8536.90
Sales unitpcs
Package quantity30 pcs
Voltage12 V AC
Range of productZelio Logic
Product or component typeCompact smart relay
Local displayWithout
Number or control scheme lines0…240 with ladder programming; 0…500 with FBD programming
Cycle time6…90 ms
Backup time10 years at 25 °C
Clock drift12 min/year at 0…55 °C; 6 s/month at 25 °C
ChecksProgram memory on each power up
[Us] rated supply voltage24 V AC
Supply voltage limits20.4…28.8 V
Supply frequency50/60 Hz
Maximum supply current145 mA (without extension)
Power consumption in VA4 VA without extension
Isolation voltage1780 V
Protection typeAgainst inversion of terminals (control instructions not executed)
Discrete input number8
Discrete input voltage24 V AC
Discrete input current4.4 mA
Discrete input frequency47...53 Hz; 57...63 Hz
Voltage state 1 guaranteed>= 14 V for discrete input
Voltage state 0 guaranteed<= 5 V for discrete input
Current state 1 guaranteed>= 2 mA (discrete input)
Current state 0 guaranteed<= 0.5 mA (discrete input)
Analogue input number0
Input impedance4.6 kOhm for discrete input
Number of outputs8 relay
Output voltage limits5...30 V DC (relay output); 24...250 V AC
Contacts type and compositionNO for relay output
Output thermal current8 A for all 4 outputs for relay output
Electrical durabilityAC-12: 500000 cycles at 230 V, 1.5 A for relay output conforming to IEC 60947-5-1; AC-15: 500000 cycles at 230 V, 0.9 A for relay output conforming to IEC 60947-5-1; DC-12: 500000 cycles at 24 V, 1.5 A for relay output conforming to IEC 60947-5-1; DC-13: 500000 cycles at 24 V, 0.6 A for relay output conforming to IEC 60947-5-1
Switching capacity in mA>= 10 mA at 12 V (relay output)
Operating rate in Hz0.1 Hz (at Ie) for relay output; 10 Hz (no load) for relay output
Mechanical durability10000000 cycles for relay output
[Uimp] rated impulse withstand voltage4 kV conforming to EN/IEC 60947-1 and EN/IEC 60664-1
ClockWith
Response time50 ms with ladder programming (from state 0 to state 1) for discrete input; 50 ms with ladder programming (from state 1 to state 0) for discrete input; 50...255 ms with FBD programming (from state 0 to state 1) for discrete input; 50...255 ms with FBD programming (from state 1 to state 0) for discrete input; 10 ms (from state 0 to state 1) for relay output; 5 ms (from state 1 to state 0) for relay output
Connections - terminalsScrew terminals, 1 x 0.2...1 x 2.5 mm² (25 AWG...14 AWG) semi-solid; Screw terminals, 1 x 0.2...1 x 2.5 mm² (25 AWG...14 AWG) solid; Screw terminals, 1 x 0.25...1 x 2.5 mm² (24 AWG...14 AWG) flexible with cable end; Screw terminals, 2 x 0.2...2 x 1.5 mm² (24 AWG...16 AWG) solid; Screw terminals, 2 x 0.25...2 x 0.75 mm² (24 AWG...18 AWG) flexible with cable end
Tightening torque0.5 N.m
Overvoltage categoryIII conforming to IEC 60664-1
Product weight0.22 kg
Immunity to microbreaks10 ms repeated 20 times
Product certificationsGL; UL; CSA; GOST; C-Tick
StandardsIEC 61000-4-6 level 3; IEC 60068-2-27 Ea; IEC 61000-4-11; IEC 60068-2-6 Fc; IEC 61000-4-4 level 3; IEC 61000-4-5; IEC 61000-4-3; IEC 61000-4-2 level 3; IEC 61000-4-12
IP degree of protectionIP20 (terminal block) conforming to IEC 60529; IP40 (front panel) conforming to IEC 60529
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/conductedClass B conforming to EN 55022-11 group 1
Pollution degree2 conforming to IEC 61131-2
Ambient air temperature for operation-20…40 °C in non-ventilated enclosure conforming to IEC 60068-2-1 and IEC 60068-2-2; -20…55 °C conforming to IEC 60068-2-1 and IEC 60068-2-2
Ambient air temperature for storage-40…70 °C
Operating altitude2000 m
Maximum altitude transport3048 m
Relative humidity95 % without condensation or dripping water
Country of originFR
Warranty (in months)18

Properties

MOQ1

Cross-References

Attached Documents