Product Model

257-840

In Stock
Last updated: 2025/4/18
wago 257-840

Selling Points

  • 1Fast and secure termination of solid and ferruled conductors with push-in CAGE CLAMP.
  • 2Compact design with 2.5 mm² current capacity and 5/5.08 mm pin spacing.
  • 3Versatile application in drive and controller technology, lighting industry, and more.
  • 4Easy to use with commoning option for simplified wiring.
  • 5Durable construction for reliable long-term performance.
Product Details
257-840
wago

Technical Specifications

Detailed engineering parameters based on manufacturer documentation

ParameterValueParameterValue
Variants:
Other colors
Clamping units
1
Total number of potentials
1
Number of connection types
1
Number of levels
1
Pin spacing
5/5.08?mm?/ 0.197/0.2?inches
Width
7.8?mm?/ 0.307?inches
Height
24.2?mm?/ 0.953?inches
Height from the surface
20.2?mm?/ 0.795?inches
Depth
14.2?mm?/ 0.559?inches
Solder pin length
4mm
Solder pin dimensions
0.7 x 0.7?mm
Drilled hole diameter with tolerance
1.1(+0.1)mm
PCB contact
THT
Solder pin arrangement
within the terminal block (in-line)
Number of solder pins per potential
2
Note (material data)
Information on material specifications can be found here
Color
red
Material group
I
Insulation material (main housing)
Polyamide (PA66)
Flammability class per UL94
V0
Clamping spring material
Chrome-nickel spring steel (CrNi)
Contact material
Electrolytic copper (ECu)
Contact plating
Tin
Fire load
0.02MJ
Weight
1.1g
Limit temperature range
-60 … +105?°C
Product Group
4 (Printed Circuit Connectors)
eCl@ss 10.0
27-44-04-01
eCl@ss 9.0
27-44-04-01
ETIM 9.0
EC002643
ETIM 8.0
EC002643
ECCN
NO US CLASSIFICATION
PU (SPU)
500?(100)?pcs
Packaging type
box
Country of origin
PL
GTIN
4044918850698
Customs tariff number
8536904000
RoHS Compliance Status
Compliant,No Exemption
Ratings per
IEC/EN 60664-1
Rated voltage (III / 3)
250V
Rated impulse voltage (III / 3)
4kV
Rated voltage (III/2)
320V
Rated surge voltage (III/2)
4kV
Nominal voltage (II/2)
630V
Rated surge voltage (II/2)
4kV
Rated current
24A
Legend (ratings)
(III / 2) ? Overvoltage category III / Pollution degree 2
Approvals per
CSA
Rated voltage UL (Use Group B)
300V
Rated current UL (Use Group B)
15A
Rated voltage UL (Use Group D)
300V
Rated current UL (Use Group D)
10A
Rated voltage CSA (Use Group B)
300V
Rated current CSA (Use Group B)
15A
Rated voltage CSA (Use Group D)
300V
Rated current CSA (Use Group D)
10A
Connection technology
CAGE CLAMP?
Actuation type
Push-button (angled)
Solid conductor
0.08 … 2.5?mm2?/ 28 … 12?AWG
Fine-stranded conductor
0.08 … 2.5?mm2?/ 28 … 12?AWG
Fine-stranded conductor; with insulated ferrule
0.25 … 1.5?mm2
Fine-stranded conductor; with uninsulated ferrule
0.25 … 1.5?mm2
Note (conductor cross-section)
12 AWG: THHN, THWN
Strip length
5 … 6?mm?/ 0.2 … 0.24?inches
Conductor connection direction to PCB
Number of poles
1

Specifications may be subject to change without notice