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Wago
857-450Loop-powered isolation amplifier; Bipolar current and voltage input signal; Current output signal; Configuration via DIP switch; Power supply via output; 6 mm module width; 2,50 mm²
Wago 857-531
Threshold value switches; Analog values; 1 changeover contact; Digital output; Configuration via software; Supply voltage: 24 VDC; 6 mm module width; 2,50 mm²
- MPN
- 857-531
Price and lead time confirmed within 1 business day
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- 12-month warranty (new) · 3-month (used/refurbished)
- 30-day returns, no restocking fee on unused parts
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What is the Wago 857-531?
Short description:
This threshold value switch for analog signals monitors standard analog signals and reports signals exceeding a preset threshold.
Configurable digital switching output:
GND switching: The digital output (DO) is switched to “GND” for all input values that are smaller than the lower switching threshold or greater than the upper switching threshold.
U s switching: For all input values that are smaller than the lower switching threshold or greater than the upper switching threshold, the digital output (DO) adopts the value of the supply voltage.
The preset switching thresholds are 0% and 100% (±0.25 V / ±0.5 mA) of the input measurement range. The switching thresholds can be adjusted via the interface configuration software.
Features:
PC configuration interface
Changeover relay output
Calibrated measurement range switching
Threshold value configuration via DIP switch and teach-in function via push/slide switch
3-way electrical isolation with 3 kV test voltage
Specifications
Notes
| Safety Information | The input and digital output must be safely isolated from hazardous live parts! |
| Note | Use shielded signal cables!Only use shielded signal cables for analog input and output signals.This ensures the device maintains its specified accuracy and immunity to interference, even when external disturbances affect the signal cable., Additional setting options via the WAGO Interface Configuration Software |
Technical data - Configuration
| Configuration options | DIP switch, WAGO Interface Configuration Software, Push/slide switch |
Technical data - Input
| Input signal type | Voltage, Current |
| Input signal (voltage) | ±10 V, 0 … 30 V |
| Input signal (current) | ±20 mA |
| Input resistance (current input) | ≤ 200 Ω |
| Input resistance (voltage input) | ≥ 100 kΩ |
| Input current (max.) | 22 mA |
| Input voltage (max.) | 31 V |
Technical data - Output (digital)
| Switching voltage (DO) max. | Supply voltage applied |
| Continuous current (DO) max. | 100 mA (no internal restriction) |
| Number of switching thresholds (DO) | 2 (adjustable) |
Technical data - Output (relay)
| Number of changeover/switchover contacts | 1 |
| Switching Voltage, Max. | 250 VAC |
| Switching power (resistive) max. | AC 1500 VA; DC (see load limit curve) |
| Drop-out time (typ.) | 4 ms |
| Number of switching thresholds (relay) | 1 or 2 (adjustable) |
| Configurable rise/fall delay time (relay) | 0 … 30 s (via software) |
| Continuous current (max.) | 6 A |
Technical data - Signal processing
| Hysteresis | Adjustable via DIP switch or software (valid for relays and DO) |
| Step response (typ.) | 16 ms |
Technical data - Measurement error
| Transmission error (typ.) | ≤ 0.1 % of upper-range value |
| Temperature coefficient | ≤ 0.01 %/K |
Technical data - Power supply
| Power supply type | 24 VDC (SELV) |
| Nominal supply voltage U<sub>S</sub> | 24 VDC |
| Supply voltage range | ±30 % |
| Current consumption at nominal supply voltage | ≤ 25 mA (+ IDO) |
Safety and protection
| Rated voltage | 300 V |
| Protection type | IP20 |
Safety and protection - Test voltage
| Test voltage (input/relay output/supply) | 3 kVAC; 50 Hz; 1 min |
Safety and protection - Insulation coordination
| Overvoltage category | II |
| Pollution degree | 2 |
| Insulation type (input/supply) | Reinforced insulation (safe isolation) |
| Insulation type (relay) | Reinforced insulation (safe isolation) |
| Insulation type (adjacent devices) | Reinforced insulation (safe isolation) |
Connection data
| Connection technology | Push-in CAGE CLAMP® |
| Solid conductor | 0.08 … 2.5 mm² / 28 … 14 AWG |
| Fine-stranded conductor | 0.34 … 2.5 mm² / 22 … 14 AWG |
| Strip length | 9 … 10 mm / 0.35 … 0.39 inches |
Physical data
| Width | 6 mm / 0.236 inches |
| Height | 94 mm / 3.701 inches |
| Depth from upper-edge of DIN-rail | 97.8 mm / 3.85 inches |
Mechanical data
| Mounting type | DIN-35 rail |
Material data
| Insulation material (main housing) | Polyamide (PA66) |
| Flammability class per UL94 | V0 |
| Fire load | 0.013 MJ |
| Weight | 38.6 g |
Environmental requirements
| Ambient temperature (operation) | -25 … +70 °C |
| Ambient temperature (storage) | -40 … +85 °C |
| Temperature range of connection cable | ≥ (Tambient + 35 K) |
| Relative humidity | 5 … 85 % (no condensation permissible) |
| Operating altitude (max.) | 2000 m |
Standards and specifications
| Conformity marking | CE |
| EMC immunity to interference | EN 61000-6-2; EN 61131-2; EN 61326-1; EN 50121-3-2 |
| EMC emission of interference | EN 61000-6-4; EN 61131-2; EN 61326-1; EN 50121-3-2 |
| Standards/specifications | EN 61373 |
Commercial data
| Product Group | 6 (INTERFACE ELECTRONIC) |
| PU (SPU) | 1 pcs |
| Packaging type | bag |
| Country of origin | DE |
| GTIN | 4066966662375 |
| Customs tariff number | 90303370000 |
Product Classification
| UNSPSC | 39122331 |
| eCl@ss 10.0 | 27-21-01-20 |
| eCl@ss 9.0 | 27-21-01-20 |
| ETIM 9.0 | EC002653 |
| ETIM 10.0 | EC002653 |
| ECCN | NO US CLASSIFICATION |
Environmental Product Compliance
| CAS-No. | 1303-86-2, 1317-36-8, 7439-92-1, 75980-60-8, 79-94-7, 80-05-7 |
| REACH Candidate List Substance | 2,2',6,6'-tetrabromo-4,4'-isopropylidenediphenol, 4,4'-isopropylidenediphenol, Diboron trioxide, Lead, Lead monoxide, Phosphine oxide, diphenyl(2,4,6-trimethylbenzoyl)- |
| RoHS Compliance Status | Compliant,With Exemption |
| RoHS Exemption | 6(c), 7(a), 7(c)-I, 7(c)-II |
| SCIP notification number (Bulgaria) | 70c9867b-9228-49b1-8871-0ff4880135a1 |
| SCIP notification number (Czech Republic) | 475d917f-e72d-4462-a17f-b1550a3b1393 |
857-531: frequently asked questions
When can 857-531 be shipped?
857-531 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.
Can I pick up 857-531 in person?
Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.
Is express delivery available?
Yes — mention it when you request a quote for 857-531 and we'll include express shipping options in our reply.
My factory is down and I need this urgently — can you help?
For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for 857-531, subject to availability and destination.
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Wago 857-531Price and lead time confirmed within 1 business day
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