Schneider Electric

Schneider Electric SR2B121BD Compact Smart Relay, 12 I/O, 24V DC, 4 Relay Outputs, with Clock and Display

  • MPN: SR2B121BD
  • PPN: SCH-SR2B121BD
  • If you can't find the product or are unsure which one you need, please use the Product Selector tool below

    • CAD

    $262.14

    / EA

    Available to Order

    Available to Ship Same/Next Business Day if In Stock and Ordered before 12:00 PM EST

    Available To Ship Immediately:0

    Loading dialog...

    Looking to buy a large quantity?

    To View Branch Inventory And Your Custom Pricing

    Spec sheet

    Description

    This Zelio Logic SR2 compact smart relay / programmable controller uses a supply voltage of 24V direct current. It has 12 inputs / outputs with screw-clamp terminals, has an integrated clock and LCD display. It has compact design, allowing installation on DIN rail. It also offers simple programming, display and diagnosing of malfunctions display and navigation buttons. Its simple ladder programming makes it adapted for non-specialists.

    Features

    • Equipped with 12 onboard I/O points consisting of 8 digital inputs and 4 relay outputs, this compact Zelio Logic smart relay is ideal for managing small-scale automation loops. Four of the digital inputs can be configured as high-resolution 0-10V analog inputs, allowing system integrators to monitor temperature sensors, pressure transducers.
    • Designed to operate on a stable 24V DC input voltage, this smart relay features a wide acceptable voltage tolerance to handle the charging and discharging cycles of backup battery systems and industrial power supplies. This makes it an excellent, resilient choice for remote telemetry stations, solar-powered water pumps, and critical backup infrastructure where utility AC power is unavailable or unreliable.

    Documentation & Downloads

    Specifications

    Key Specifications

    Range Of ProductZelio Logic
    Product Or Component Typecompact smart relay

    Complementary

    Contacts Type And CompositionNO relay output
    Discrete Input Typeresistive
    Analogue Input Range0...10 V || 0...24 V
    Output Thermal Current8 A for all 4 outputs relay output
    Number Or Control Scheme Lines0-240 ladder || 0-500 FBD
    Backup Time10 years 25 °C
    Analogue Input Typecommon mode
    Current State 1 Guaranteed>= 1.2 mA IB...IG used as discrete input circuit) || >= 2.2 mA I1...IA and IH...IR discrete input circuit)
    Clockwith
    Local Displaywith
    [Uimp] Rated Impulse Withstand Voltage4 kV EN/IEC 60947-1 and EN/IEC 60664-1
    Output Voltage Limits24...250 V AC relay output) || 5...30 V DC relay output)
    Electrical DurabilityAC-12 500000 cycles 230 V, 1.5 A relay output IEC 60947-5-1 || AC-15 500000 cycles 230 V, 0.9 A relay output IEC 60947-5-1 || DC-12 500000 cycles 24 V, 1.5 A relay output IEC 60947-5-1 || DC-13 500000 cycles 24 V, 0.6 A relay output IEC 60947-5-1
    Analogue Input Number4
    Input Compatibility3-wire proximity sensors PNP discrete input
    Supply Voltage Limits19.2-30 V
    Overvoltage CategoryIII IEC 60664-1
    Maximum Supply Current100 mA without extension)
    Temperature Probe TypeNTC 10k 25 °C || NTC 1000k 25 °C || KTY81 210/220/221/222/250 || Pt 500
    Analogue Input Resolution8 bits
    Counting Frequency1 kHz discrete input
    Cycle Time6-90 ms
    Maximum Permissible Voltage30 V analogue input circuit
    [Us] Rated Supply Voltage24 V DC
    Input Impedance12 kOhm IB...IG used as analogue input circuit || 12 kOhm IB...IG used as discrete input circuit || 7.4 kOhm I1...IA and IH...IR discrete input circuit
    Number Of Outputs4 relay
    Conversion Error+/- 5 % 25 °C analogue input circuit || +/- 6.2 % 55 °C analogue input circuit
    Discrete Input Voltage24 V DC
    Lsb Value39 mV analogue input circuit
    Clock Drift12 min/year 0-55 °C || 6 s/month 25-25 °C
    Discrete Input Current4 mA
    Response Time10 ms from state 0 to state 1)relay output || 5 ms from state 1 to state 0)relay output
    Power Dissipation In W3 W without extension
    Net Weight0.25 kg
    Voltage State 0 Guaranteed<= 5 V I1...IA and IH...IR discrete input circuit || <= 5 V IB...IG used as discrete input circuit
    Conversion Timesmart relay cycle time analogue input circuit
    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
    Voltage State 1 Guaranteed>= 15 V I1...IA and IH...IR discrete input circuit || >= 15 V IB...IG used as discrete input circuit
    Current State 0 Guaranteed<= 0.5 mA IB...IG used as discrete input circuit) || <= 0.75 mA I1...IA and IH...IR discrete input circuit)
    Operating Distance10 m between stations, with screened cable (sensor not isolated) analogue input circuit
    Mechanical Durability10000000 cycles relay output
    Tightening Torque0.5 N.m
    Switching Capacity In Ma>= 10 mA 12 V relay output)
    Operating Rate In Hz0.1 Hz at Ie)relay output || 10 Hz no load)relay output
    Discrete Input Number8 IEC 61131-2 Type 1
    Reverse Polarity Protectionwith
    Repeat Accuracy+/- 2 % 55 °C analogue input circuit
    Checksprogram memory on each power up

    Environment

    Product CertificationsGL || CSA || UL || GOST || C-Tick
    Disturbance Radiated/Conductedclass B EN 55022-11 group 1
    Immunity To Microbreaks1 ms
    Ip Degree Of ProtectionIP20 IEC 60529 terminal block) || IP40 IEC 60529 front panel)
    Ambient Air Temperature For Storage-40-70 °C
    Maximum Altitude Transport3048 m
    StandardsIEC 61000-4-12 || IEC 61000-4-4 level 3 || IEC 61000-4-5 || IEC 61000-4-11 || IEC 61000-4-2 level 3 || IEC 60068-2-6 Fc || IEC 61000-4-6 level 3 || IEC 60068-2-27 Ea || IEC 61000-4-3
    Ambient Air Temperature For Operation-20-40 °C in non-ventilated enclosure IEC 60068-2-1 and IEC 60068-2-2 || -20-55 °C IEC 60068-2-1 and IEC 60068-2-2
    Environmental CharacteristicEMC directive IEC 61000-6-2 || EMC directive IEC 61000-6-3 || EMC directive IEC 61000-6-4 || EMC directive IEC 61131-2 zone B || low voltage directive IEC 61131-2
    Pollution Degree2 IEC 61131-2
    Relative Humidity95-95 % without condensation or dripping water
    Operating Altitude2000 m

    Contractual warranty

    Warranty18 months

    Offer Sustainability

    Rohs Exemption InformationYes
    Environmental DisclosureENVPEP060406EN
    Pvc FreeYes
    WeeeThe product must be disposed on European Union markets following specific waste collection and never end up in rubbish bins
    Circularity ProfileENVEOLI0604006EN
    Mercury FreeYes
    Sustainable Offer StatusGreen Premium product
    Reach RegulationReference contains Substances of Very High Concern above the threshold
    China Rohs RegulationX
    Eu Rohs DirectivePro-active compliance (Product out of EU RoHS legal scope)
    Compact Smart Relay, 12 I/O, 24V DC, 4 Relay Outputs, with Clock and Display

    Accessories

    Loading carousel layout...

    Similar Products

    Loading carousel layout...

    CAD$262.14/ EA

    Loading add to cart quantity...

    banner

    Need assistance?

    We can help! Connect with our Sales Team Today!

    Contact Us