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Wago
2857-533/000-001Threshold value switches; RTD sensors; 1 make contact; Digital output; Configuration via software; Supply voltage: 24 VDC; 12.5 mm module width; Railway
Wago 2857-550
Current signal conditioner; Current input signal; Current and voltage output signal; Digital and relay output; Configuration via software; Supply voltage: 24 VDC; 22.5 mm module width
- MPN
- 2857-550
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 2857-550?
Short description:
WAGO's current signal conditioner measures AC/DC currents up to 100 A, while converting the measured current into an analog standard signal at the output.
Features:
Both digital signal output and relay with changeover contact react to configured measurement range limits (on/off switching delay and threshold value switch function can be configured with up to two threshold values).
Clipping capability for analog signal limitation to output end values
Adjustable software filter
Safe 3-way isolation with 3 kV test voltage per EN 61010-1
Specifications
Notes
| Note | This product is powered by 24 VDC, which can be bridged using lateral push-in type jumper bars: (6.1) US+ (BR) and (6.2) GND 2 (BR). With this variant, it is necessary to ensure that the maximum permissible total current of 6 A is not exceeded., Additional setting options via the WAGO Interface Configuration Software |
Technical data - Configuration
| Configuration options | DIP switch, WAGO Interface Configuration Software |
Technical data - Input
| Input signal type | Current |
| Input signal (current) | 0.5 … 100 AAC, ±100 ADC |
| Frequency range | 15 … 1000 Hz |
| Input current (max.) | 100 A AC/DC |
| Response threshold | 500 mA (AC); 250 mA (DC) |
| Resolution (current) | 10 mA, 10 mA |
Technical data - Output (analog)
| Output signal type | Current, Voltage |
| Output signal (voltage) | ±5 V, 0 … 5 V, 1 … 5 V, ±10 V, 0 … 10 V, 2 … 10 V |
| Output signal (current) | ±10 mA, 0 … 10 mA, 2 … 10 mA, ±20 mA, 0 … 20 mA, 4 … 20 mA |
| Load impedance (voltage output) | ≥ 1 kΩ |
| Load impedance (current output) | ≤ 600 Ω |
Technical data - Output (digital)
| Switching voltage (DO) max. | Applied supply voltage − 0.3 V |
| Continuous current (DO) max. | 100 mA (no internal restriction) |
| Number of switching thresholds (DO) | 1 or 2 (adjustable) |
| Configurable rise/fall delay time (DO) | 0 … 60 s (via software) |
Technical data - Output (relay)
| Dielectric strength (open contact) (AC, 1 min) | 1 kV<sub>eff</sub> |
| Number of changeover/switchover contacts | 1 |
| Contact material (relay) | AgNi + Au |
| Switching Voltage, Max. | 250 VAC |
| Dielectric strength (open contact) (AC, 1 min) | 1 kVrms |
| Pull-in time (typ.) | 8 ms |
| Drop-out time (typ.) | 4 ms |
| Bounce time (typ.) | 8 ms |
| Number of switching thresholds (relay) | 1 or 2 (adjustable) |
| Configurable rise/fall delay time (relay) | 0 … 60 s (via software) |
Technical data - Signal processing
| Measurement method | True RMS measurement; Arithmetic mean value |
| Limit frequency | 3.3 kHz |
| Software filter (adjustable) | Moving average value (filter level: 30) |
| Step response (typ.) | 60 ms (DC; for software filter 3/default setting), 250 ms (AC), 1 ms (DC/AC for signals < 0.5 A) |
Technical data - Measurement error
| Transmission error (max.) | ≤ 1 % (of the full scale value) |
| Temperature coefficient | ≤ 0.01 %/K |
Technical data - Power supply
| Power supply type | 24 VDC |
| Nominal supply voltage U<sub>S</sub> | 24 VDC |
| Supply voltage range | ±30 % |
| Current consumption at nominal supply voltage | ≤ 50 mA (+ IDO) |
Safety and protection
| Rated voltage | 300 V |
| Rated voltage of the measurement circuit connections per EN 61010-2-030 | AC 300 V |
| Measurement category per EN/UL 61010-2-030 | CAT II (input) |
| Note on insulation parameters | The conductor carrying the measurement current must have at least basic insulation rated for the applied voltage. The test voltage of the conductor carrying the measurement current must be at least 1390 VAC rms or 1390 VDC. The digital output (DO) operates at the supply potential. |
| Protection type | IP20 |
Safety and protection - Test voltage
| Test voltage (input/output/supply) | 3 kVAC; 50 Hz; 1 min |
| Test voltage (measurement circuit/relay output/supply/analog output) | 3 kVAC; 50 … 60 Hz; 1 min |
| Test voltage (measurement circuit/relay output/supply/service interface) | 3 kVAC; 50 … 60 Hz; 1 min |
| Test voltage (analog output/service interface) | 2 kVAC; 50 … 60 Hz; 1 min |
Safety and protection - Insulation coordination (UL)
| Overvoltage category | II |
| Pollution degree | 2 |
| Insulation type (measurement circuit/relay output, supply, analog output and service interface) | Double insulation (safe isolation) |
| Insulation type (analog output/service interface) | Basic insulation |
| Insulation type (relay output/supply/analog output and service interface) | Reinforced insulation (safe isolation) |
Connection data
| Connection technology | Push-in CAGE CLAMP® |
| WAGO connector | picoMAX® 5.0 |
| Solid conductor | 0.2 … 2.5 mm² / 24 … 12 AWG |
| Fine-stranded conductor | 0.2 … 2.5 mm² / 24 … 12 AWG |
| Strip length | 9 … 10 mm / 0.35 … 0.39 inches |
| Feedthrough for measurement conductor | Ø 9.5 mm |
Physical data
| Width | 22.5 mm / 0.886 inches |
| Height | 105 mm / 4.134 inches |
| Depth from upper-edge of DIN-rail | 107 mm / 4.213 inches |
Mechanical data
| Mounting type | DIN-35 rail |
Material data
| Fire load | 1.787 MJ |
| Weight | 102.8 g |
Environmental requirements
| Ambient temperature (operation) | -40 … +70 °C |
| Ambient temperature (storage) | -40 … +85 °C |
| Temperature range of connection cable | ≥ (Tambient + 10 K) |
| Temperature range of the connection cable (UL) | 80 °C |
Standards and specifications
| Conformity marking | CE |
| EMC immunity to interference | EN 61000-6-2; EN 61326-2-3; EN 50121-3-2 |
| EMC emission of interference | EN 61000-6-4; EN 61326-2-3; EN 50121-3-2 |
| Standards/specifications | EN 61010-1, EN 61373, EN 50121-3-2 |
Commercial data
| Product Group | 6 (INTERFACE ELECTRONIC) |
| PU (SPU) | 1 pcs |
| Packaging type | bag |
| Country of origin | DE |
| GTIN | 4050821676997 |
| 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 |
| REACH Candidate List Substance | 2,2',6,6'-tetrabromo-4,4'-isopropylidenediphenol, Diboron trioxide, Lead, Lead monoxide, Perfluorobutane sulfonic acid (PFBS) and its salts, 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) | a9da4d7e-c362-48c9-b365-16c96b3e1576 |
| SCIP notification number (Belgium) | 4903aab4-ec9d-422a-b0b2-73c8b611cfcd |
| SCIP notification number (Bulgaria) | 722fa4c0-c880-415e-8c2a-dd365342643d |
| SCIP notification number (Czech Republic) | aa9f0fda-b2e1-4639-b6fb-061687397b29 |
| SCIP notification number (Denmark) | e9c7dbc7-1077-47de-a91a-bc7b222707ed |
| SCIP notification number (Finland) | f90327c8-eee8-4ea0-ad4e-55438db00e5f |
| SCIP notification number (France) | 89eb3d4b-04a5-4aee-ba79-125fca3d022f |
| SCIP notification number (Germany) | 61796aa8-692d-4b07-b95e-a4e98c7cad2f |
| SCIP notification number (Hungary) | ad4fafc5-8aaa-4d10-a4d5-3846aa90e8a4 |
| SCIP notification number (Italy) | 8890fdc6-2a54-4720-a239-1e68e0fe8c12 |
| SCIP notification number (Netherlands) | 604da37d-2e98-4406-945e-8a36338b1f40 |
| SCIP notification number (Poland) | dff5a515-3b9b-4b48-8f82-f04002ca852b |
| SCIP notification number (Romania) | 681d533f-f33c-4c20-9062-7107db671054 |
| SCIP notification number (Sweden) | e2864b11-4440-44bc-835b-1dc8cf6550e0 |
No matching specifications
2857-550: frequently asked questions
When can 2857-550 be shipped?
2857-550 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 2857-550 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 2857-550 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 2857-550, subject to availability and destination.
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Wago 2857-550Price and lead time confirmed within 1 business day
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