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Wago
857-413Isolation amplifier; Voltage input signal; Current output signal; Supply voltage: 24 VDC; 6 mm module width; 2,50 mm²
Wago 857-420
Isolation amplifier; Current input signal; Current and voltage output signal; Supply voltage: 24 VDC; 6 mm module width; 2,50 mm²
- MPN
- 857-420
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 857-420?
Short description:
WAGO's isolation amplifier provides the power required for 2- or 3-wire field transmitters and electrically isolates analog signals.
Features:
Power supply to SMART transmitters
Calibrated measurement range switching
3-way electrical isolation with 2.5 kV test voltage
Specifications
Technical data - Configuration
| Configuration options | DIP switch |
Technical data - Input
| Input signal type | Current |
| Input signal (current) | 0 … 20 mA, 4 … 20 mA (calibrated, switchable) |
| Input resistance (current input) | ≤ 50 Ω |
| Sensor supply | Uv = 18 V; 30 mA |
| Input current (max.) | 50 mA |
Technical data - Output (analog)
| Output signal type | Current, Voltage |
| Output signal (voltage) | 0 … 5 V, 1 … 5 V, 0 … 10 V, 2 … 10 V (calibrated, switchable) |
| Output signal (current) | 0 … 20 mA, 4 … 20 mA (calibrated, switchable) |
| Load impedance (voltage output) | ≥ 2 kΩ |
| Load impedance (current output) | ≤ 600 Ω |
| Offset | ≤ 20 µA |
| Residual ripple | ≤ 10 mV (rms) |
Technical data - Signal processing
| Limit frequency | 100 Hz |
| Step response (typ.) | 3.5 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 |
| Nominal supply voltage U<sub>S</sub> | 24 VDC |
| Supply voltage range | ±30 % |
| Current consumption at nominal supply voltage | ≤ 45 mA |
Safety and protection
| Protection type | IP20 |
Safety and protection - Test voltage
| Test voltage (input/output/supply) | 2.5 kVAC; 50 Hz; 1 min |
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 | 0.543 MJ |
| Weight | 37 g |
Environmental requirements
| Ambient temperature (operation) | -25 … +70 °C |
| Ambient temperature (storage) | -40 … +85 °C |
| Relative humidity | 5 … 95 % (no condensation permissible) |
| Operating altitude (max.) | 2000 m |
Standards and specifications
| Conformity marking | CE |
| Standards/specifications | DNV |
Commercial data
| Product Group | 6 (INTERFACE ELECTRONIC) |
| PU (SPU) | 1 pcs |
| Packaging type | bag |
| Country of origin | DE |
| GTIN | 4045454471330 |
| Customs tariff number | 85437090300 |
Product Classification
| UNSPSC | 39121008 |
| 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 |
| REACH Candidate List Substance | 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) | 47593164-c4bd-4ccc-a4b1-02255ba1b769 |
| SCIP notification number (Belgium) | 45855355-0f1b-4c01-b8f3-b149d72a420f |
| SCIP notification number (Bulgaria) | d43a9b05-a8b7-4ef7-80dd-e2efca7e95c1 |
| SCIP notification number (Czech Republic) | 425b7eca-3492-436c-95af-5799c6c41572 |
| SCIP notification number (Denmark) | 8de4bab4-8162-41ba-8861-d43ecc914994 |
| SCIP notification number (Finland) | 8f7a5e13-6852-41de-863e-78c9a289130f |
| SCIP notification number (France) | bda94e16-8a03-4402-aa8e-d55ee9091c70 |
| SCIP notification number (Germany) | b822bbec-8555-4354-a97a-7f2f11cfcfda |
| SCIP notification number (Hungary) | 41bf7e6b-f8ec-412f-9d54-28407803d56e |
| SCIP notification number (Italy) | b9660c43-5cf3-4c7e-8d86-9df3263a64f3 |
| SCIP notification number (Netherlands) | 0458d684-8c64-4839-8eb2-d3294e4930b7 |
| SCIP notification number (Poland) | 658b5e51-6300-4938-a3f6-cc1d085898b9 |
| SCIP notification number (Romania) | 66fd79cb-9d5b-4eb6-8763-01185619c07b |
| SCIP notification number (Sweden) | ac690304-f0b1-4d15-8d80-e050a9c76b65 |
857-420: frequently asked questions
When can 857-420 be shipped?
857-420 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 857-420 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 857-420 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 857-420, subject to availability and destination.
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Wago 857-420Price and lead time confirmed within 1 business day
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