Product Model

857-420

In Stock
Last updated: 2025/4/17
wago 857-420

Selling Points

  • 1Safely transmits analog signals with 3-way electrical isolation up to 2.5 kV.
  • 2Offers calibrated measurement range switching and configurable current and voltage outputs.
  • 3Provides power to SMART transmitters, ensuring continuous operation.
  • 4Measuring 3.70 in H x 0.23 in W x 3.85 in D, it fits seamlessly on DIN-35 rail mounts.
  • 5Operates from -25°C to 70°C, suitable for various industrial environments.
Product Details
857-420
wago

Technical Specifications

Detailed engineering parameters based on manufacturer documentation

ParameterValueParameterValue
Protection type
IP20
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
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
Mounting type
DIN-35 rail
Insulation material (main housing)
Polyamide (PA66)
Flammability class per UL94
V0
Fire load
0.543MJ
Weight
37g
Ambient temperature (operation)
-25 … +70 °C
Ambient temperature (storage)
-40 … +85 °C
Relative humidity
5 … 95?% (no condensation permissible)
Operating altitude (max.)
2000m
Conformity marking
CE
Standards/specifications
DNV
Product Group
6 (INTERFACE ELECTRONIC)
eCl@ss 10.0
27-21-01-20
eCl@ss 9.0
27-21-01-20
ETIM 9.0
EC002653
ETIM 8.0
EC002653
ECCN
NO US CLASSIFICATION
PU (SPU)
1?pcs
Packaging type
bag
Country of origin
DE
GTIN
4045454471330
Customs tariff number
8543704500
CAS-No.
1303-86-2
REACH Candidate List Substance
Diboron trioxide
RoHS Compliance Status
Compliant,With Exemption
RoHS Exemption
6(c)
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
Configuration options
DIP switch
Input signal type
Current
Input signal (A)
0 … 20?mA
Input resistance (current input)
≤?50?Ω
Sensor supply
Uv= 18 V; 30 mA
Input current (max.)
50?mA
Output signal type
Current
Output signal (V)
0 … 5?V
Output signal (A)
0 … 20?mA
Load impedance (voltage output)
≥?2?kΩ
Load impedance (current output)
≤?600?Ω
Offset
≤?20?μA
Residual ripple
≤?10?mV (rms)
Limit frequency
100?Hz
Step response (typ.)
3.5?ms
Transmission error (typ.)
≤ 0.1 % of upper-range value
Temperature coefficient
≤ 0.01 %/K
Power supply type
24?VDC
Nominal supply voltage U<sub>S</sub>
DC?24?V
Supply voltage range
±30?%
Current consumption at nominal supply voltage
≤?45?mA
Test voltage (input/output/supply)
AC 2.5?kV;?50?Hz;?1?min

Specifications may be subject to change without notice