How to Select an Interface Relay for PLC Outputs
A step-by-step guide to matching PLC output type, coil voltage and current, contact rating, and socket style when selecting an interface relay.
- Part number
- SR3B261FU
- UL
- CSA
Zelio LogicSchneider Electric SR3B261FU Zelio Logic SR3 26 I/O 100-240 V AC Display Relay Output Logic Module
Schneider Electric SR3B261FU Zelio Logic SR3 smart relay, 26 I/O, 100-240 V AC, display, 10 relay outputs.
Description
About the SR3B261FU
About the SR3B261FU
The Schneider Electric SR3B261FU is a Zelio Logic SR3 modular smart relay with 26 I/O (16 discrete inputs, 10 relay outputs), a 100–240 V AC supply and a backlit LCD display with navigation buttons. It is a compact programmable controller for managing, monitoring and remote-controlling larger automation systems in industrial and commercial installations.
Certifications & Standards
- UL
- CSA
- GOST
- GL
- C-Tick
- IEC 61000-4-2
- IEC 61000-4-3
- IEC 61000-4-4
- IEC 61000-4-5
- IEC 61000-4-6
- IEC 61000-4-11
- IEC 61000-4-12
- IEC 60068-2-6
- IEC 60068-2-27
Selection Notes
The SR3B261FU runs directly from 100–240 V AC and offers the same 16 discrete input / 10 relay output count as the DC-supplied SR3B261BD, so it is the choice when the panel has no 24 V DC rail already available; the AC input circuit debounces in 50–255 ms versus millisecond-range response on the DC unit. Two of its ten relay outputs are current-limited to 5 A while the other eight carry 8 A — route higher-current loads to the 8 A-rated points.
Specification
Full specification
Main 2
| Range of Product | Zelio Logic |
|---|---|
| Product or Component Type | Modular smart relay |
Complementary 37
| Local display | With |
|---|---|
| Number or control scheme lines | 0…500 FBD, 0…240 ladder |
| Cycle time | 6…90 ms |
| Backup time | 10 years 77 °F (25 °C) |
| Clock drift | 12 min/year 32…131 °F (0…55 °C), 6 s/month 77 °F (25 °C) |
| Checks | Program memory on each power up |
| [Us] rated supply voltage | 100...240 V |
| Supply voltage limits | 85…264 V |
| Supply frequency | 50/60 Hz |
| Maximum supply current | 100 mA 100 V without extension), 50 mA 240 V without extension), 60 mA 240 V with extensions), 80 mA 100 V with extensions) |
| Power consumption in VA | 12 VA without extension, 17 VA with extensions |
| Isolation voltage | 1780 V |
| Protection Type | Against inversion of terminals (control instructions not executed) |
| Discrete input number | 16 |
| Discrete input voltage | 100...240 V AC |
| Discrete input current | 0.6 mA |
| Discrete input frequency | 47...53 Hz, 57...63 Hz |
| Voltage state 1 guaranteed | >= 79 V discrete input |
| Voltage state 0 guaranteed | <= 40 V discrete input |
| Current state 1 guaranteed | >= 0.17 mA discrete input) |
| Current state 0 guaranteed | <= 0.5 mA discrete input) |
| Input impedance | 350 kOhm discrete input |
| Number of Outputs | 10 relay |
| Output voltage limits | 5...30 V DC relay output), 24...250 V AC |
| Contacts type and composition | NO relay output |
| Output thermal current | 5 A for 2 outputs relay output, 8 A for 8 outputs relay output |
| Electrical durability | AC-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 |
| Switching capacity in mA | >= 10 mA 12 V relay output) |
| Operating rate in Hz | 0.1 Hz at Ie)relay output, 10 Hz no load)relay output |
| Mechanical durability | 10000000 cycles relay output |
| [Uimp] rated impulse withstand voltage | 4 kV EN/IEC 60947-1 and EN/IEC 60664-1 |
| Clock | With |
| Response time | 50 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 |
| Connections - terminals | Screw 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 torque | 4.4 lbf.in (0.5 N.m) |
| Overvoltage category | III conforming to IEC 60664-1 |
| Net Weight | 0.9 lb(US) (0.4 kg) |
Environment 12
| Immunity to microbreaks | 10 ms |
|---|---|
| Product Certifications | GOST, GL, CSA, UL, C-tick |
| Standards | IEC 61000-4-12, IEC 60068-2-27 Ea, IEC 60068-2-6 Fc, IEC 61000-4-6 level 3, IEC 61000-4-5, IEC 61000-4-11, IEC 61000-4-3, IEC 61000-4-2 level 3, IEC 61000-4-4 level 3 |
| IP degree of protection | IP20 IEC 60529 terminal block), IP40 IEC 60529 front panel) |
| Environmental characteristic | EMC 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 |
| Pollution degree | 2 IEC 61131-2 |
| 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 |
| Ambient Air Temperature for Storage | -40…158 °F (-40…70 °C) |
| Operating altitude | 6561.68 ft (2000 m) |
| Maximum altitude transport | 10000 ft (3048 m) |
| Relative Humidity | 95 % without condensation or dripping water |
Show all 64 specifications ↓ Show less ↑13 more values in Identification, Contractual warranty, Logistics.
Identification 7
| Part number | SR3B261FU |
|---|---|
| Brand | Schneider Electric |
| Condition | New, factory sealed |
| Source | Schneider Electric and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 3389110550009 |
Contractual warranty 1
| Warranty (in months) | 18 |
|---|
Logistics 5
| Country of origin | FR |
|---|---|
| Shipping weight | 0.4 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 30 Oct 2026
Documents
Documents for SR3B261FU
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Ask us for the datasheet
Certifications
Certifications and standards
- UL
- CSA
- IEC 61000-4-12
- IEC 60068-2-27 Ea
- IEC 60068-2-6 Fc
- IEC 61000-4-6 level 3
- IEC 61000-4-5
- IEC 61000-4-11
- IEC 61000-4-3
- IEC 61000-4-2 level 3
- IEC 61000-4-4 level 3
Quick answers
Questions about the SR3B261FU
Which supply voltage is SR3B261FU rated for?
The rated operational voltage of SR3B261FU is 100–240 V AC.
What is the HS code of SR3B261FU for customs?
The tariff (HS) code on file for SR3B261FU is 853710.
What is the EAN of SR3B261FU?
The EAN (GTIN) of SR3B261FU is 3389110550009.
Where does SR3B261FU ship from, and how fast?
SR3B261FU ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
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Series
Schneider Electric Zelio Logic
- Brand
- Schneider Electric
- Series
- Zelio Logic
