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Wago
857-451Passive isolator, 1-channel; Current input signal; Current output signal; Power via input; 6 mm module width; 2,50 mm²
Wago 857-550
Current signal conditioner; Current input signal; Current and voltage output signal; Digital output; Configuration via software; Supply voltage: 24 VDC; 6 mm module width; 2,50 mm²
- MPN
- 857-550
Price and lead time confirmed within 1 business day
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- 3Approve it and we ship — in-stock parts within 1 business day
- 12-month warranty (new) · 3-month (used/refurbished)
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What is the Wago 857-550?
Short description:
This current signal conditioner measures both 0–1 A and 0–5 A AC/DC currents, converting the input signal to an standard analog signal at the output.
Digital switching output (DO):
The digital switching output (DO) allows signaling of a message. Two switching behaviors can be selected for the edge:
GND switching: For all values below the lower threshold or above the upper threshold, the digital output switches to “GND.”
U s switching: For all values below the lower threshold or above the upper threshold, the digital output (DO) matches the supply voltage level.
The preset switching thresholds are 0% and 100% of the input measurement range. These thresholds can be adjusted via the PC configuration interface. The switching threshold hysteresis is 5 mA.
Features:
PC configuration interface
True RMS measurement or arithmetic mean value
Digital switching output (configurable switching thresholds)
Switchable filter function
Calibrated measurement range switching
3-way electrical isolation with 2.5 kV test voltage
Extremely fast response times
Measurement range overflow indication
Specifications
Notes
| Safety Information | Input and output must be safely isolated from any hazardous live parts! |
| Note | Additional setting options via the WAGO Interface Configuration Software, Use shielded signal cables!Only use shielded signal cables for analog output signals.This ensures the device maintains its specified accuracy and immunity to interference, even when external disturbances affect the signal cable. |
Technical data - Configuration
| Configuration options | DIP switch, WAGO Interface Configuration Software |
Technical data - Input
| Input signal type | Current |
| Input signal (current) | 0 … 1 A AC/DC (IN 1), 0 … 5 A AC/DC (IN 2) |
| Frequency range | 16 … 400 Hz |
| Input resistance (current input) | 47 mΩ (IN 1), 10 mΩ (IN 2) |
| Input current (max.) | 10 A (IN 1; 5 s); 15 A (IN 2; 5 s) |
| Response threshold | 2 mA (IN 1); 4 mA (IN 2) |
Technical data - Output (analog)
| Output signal type | Current, Voltage |
| Output signal (voltage) | 0 … 5 V, 1 … 5 V, 0 … 10 V, 2 … 10 V |
| Output signal (current) | 0 … 10 mA, 2 … 10 mA, 0 … 20 mA, 4 … 20 mA |
| Load impedance (voltage output) | ≥ 2 kΩ (Temperature range restrictions may occur.) |
| Load impedance (current output) | ≤ 600 Ω Temperature range restrictions may occur. |
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) | 1 (adjustable) |
Technical data - Signal processing
| Measurement method | True RMS measurement; Arithmetic mean value |
| Software filter (adjustable) | Moving average value (filter level: 30) |
| Step response (typ.) | 60 ms |
Technical data - Measurement error
| Transmission error (typ.) | ≤ 0.1 % of upper-range value |
| Transmission error (max.) | ≤ 0.4 % 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 | ≤ 40 mA (+ IDO) |
Safety and protection
| Rated voltage | 300 V |
| Protection type | IP20 |
Safety and protection - Test voltage
| Test voltage (input/output/supply) | 2.5 kVAC; 50 Hz; 1 min |
Safety and protection - Insulation coordination
| Overvoltage category | II |
| Pollution degree | 2 |
| Insulation type (input/analog output/supply) | Functional insulation |
| 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 | 0.418 MJ |
| Weight | 64 g |
Environmental requirements
| Ambient temperature (operation) | -25 … +70 °C (At nominal current, in individual arrangement; -25 … +60 °C (block arrangement)) |
| Ambient temperature (storage) | -40 … +85 °C |
| Processing temperature | -25 … +50 °C |
| Temperature range of connection cable | ≥ (Tambient + 25 K) |
| Relative humidity | 5 … 95 % (no condensation permissible) |
| Operating altitude (max.) | 2000 m |
Standards and specifications
| Conformity marking | CE |
| EMC immunity to interference | EN 61000-6-2 |
| EMC emission of interference | EN 61000-6-3; EN 61000-6-4 |
| Standards/specifications | EN 50121-3-2, DNV, EN 61010-2-201 |
Commercial data
| Product Group | 6 (INTERFACE ELECTRONIC) |
| PU (SPU) | 1 pcs |
| Packaging type | bag |
| Country of origin | DE |
| GTIN | 4050821226734 |
| Customs tariff number | 85437090300 |
Product Classification
| UNSPSC | 41113630 |
| eCl@ss 10.0 | 27-21-01-23 |
| eCl@ss 9.0 | 27-21-01-23 |
| ETIM 9.0 | EC002475 |
| ETIM 10.0 | EC002475 |
| 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 (Austria) | 50f64a02-d6d3-4adb-a7b9-f815da2344ad |
| SCIP notification number (Belgium) | 0e04df68-4c33-4c78-ade6-82bf60716e8f |
| SCIP notification number (Bulgaria) | d1dc9f2a-4544-48c8-8c42-717ec18dc517 |
| SCIP notification number (Czech Republic) | 1a2ce406-9928-4d64-aeb5-27a0e58a61ff |
| SCIP notification number (Denmark) | 4e1a4190-497b-4457-98c6-445a2a2407aa |
| SCIP notification number (Finland) | 10e56fdb-95fd-4317-8b19-0eec048887fc |
| SCIP notification number (France) | 0152e5b3-4bb3-407b-962c-95da92c8f591 |
| SCIP notification number (Germany) | 7d05eaec-2f49-4372-825c-639900cb0cfa |
| SCIP notification number (Hungary) | 8a6d556b-a2a5-47d7-be2c-0f7f08b455aa |
| SCIP notification number (Italy) | 80363ecc-0750-47b3-8adc-6d8d376cb109 |
| SCIP notification number (Netherlands) | 4c0930d7-0757-44b2-a2ac-a852f21c8101 |
| SCIP notification number (Poland) | e163f598-e916-448a-8e77-616fb920165c |
| SCIP notification number (Romania) | c1c27efe-e372-4fb2-b5a4-5eac757ec01f |
| SCIP notification number (Sweden) | 6a471be4-9d63-4d9d-9da5-8ddf090e997c |
No matching specifications
857-550: frequently asked questions
When can 857-550 be shipped?
857-550 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 857-550 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 857-550 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 857-550, subject to availability and destination.
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Wago 857-550Price and lead time confirmed within 1 business day
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