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Wago 257-551
PCB terminal block, 257 Series, with 7.5 mm pin spacingThis PCB terminal block (item number 257-551) is designed to connect conductors quickly and easily. It is perfect for custom installations with d…
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Description
PCB terminal block, 257 Series, with 7.5 mm pin spacingThis PCB terminal block (item number 257-551) is designed to connect conductors quickly and easily. It is perfect for custom installations with different mounting types. Strip lengths must be between 5 and 6 mm when connecting conductors to this PCB terminal block. This product features one conductor terminal and utilizes CAGE CLAMP®. Our trusted universal connection known as CAGE CLAMP® leads the way when it comes to connection technology and electrical interconnections. The item’s dimensions are (10.3 x 24.2 x 14.2) mm (width x height x depth). This PCB terminal block is suitable for conductor cross sections ranging from 0.08 mm² to 2.5 mm².The contact surface is coated with tin. Push-button (angled) is used to operate this PCB terminal block. THT is used to assemble the PCB terminal block. The conductor is designed to be inserted into the board at an angle of 0°..
Specification
Notes
| Variants: | Other colors, Versions for Ex e II and Ex i, Other versions (or variants) can be requested from WAGO Sales or configured at https://configurator.wago.com/. |
|---|
Electrical data - Ratings per IEC/EN
| Ratings per | IEC/EN 60664-1 |
|---|---|
| Nominal voltage (III/3) | 400 V |
| Rated impulse withstand voltage (III / 3) | 6 kV |
| Rated voltage (III/2) | 630 V |
| Rated impulse withstand voltage (III/2) | 6 kV |
| Nominal voltage (II/2) | 1000 V |
| Rated impulse withstand voltage (II/2) | 6 kV |
| Rated current | 24 A |
| Legend (ratings) | (III / 2) ≙ Overvoltage category III / Pollution degree 2 |
| Ratings per | IEC/EN 60664-1 / IEC/EN 60664-1 / IEC/EN 60664-1 |
| Overvoltage category | III / III / II |
| Pollution degree | 3 / 2 / 2 |
| Nominal voltage | 400 V / 630 V / 1000 V |
| Rated impulse withstand voltage | 6 kV / 6 kV / 6 kV |
| Rated current | 24 A / 24 A / 24 A |
Electrical data - Ratings per UL
| Approvals per | UL 1059 |
|---|---|
| Rated voltage UL (Use Group B) | 300 V |
| Rated current UL (Use Group B) | 15 A |
| Rated voltage UL (Use Group D) | 300 V |
| Rated current UL (Use Group D) | 10 A |
| Approvals per | UL 1059 / UL 1059 / UL 1059 |
| Use group | B / C / D |
| Rated voltage | 300 V / 300 V |
| Rated current | 15 A / 10 A |
Electrical data - Ratings per CSA
| Approvals per | CSA |
|---|---|
| Rated voltage CSA (Use Group B) | 300 V |
| Rated current CSA (Use Group B) | 15 A |
| Rated voltage CSA (Use Group D) | 300 V |
| Rated current CSA (Use Group D) | 10 A |
| Approvals per | CSA / CSA / CSA |
| Use group | B / C / D |
| Rated voltage | 300 V / 300 V |
| Rated current | 15 A / 10 A |
Connection data
| Clamping units | 1 |
|---|---|
| Total number of potentials | 1 |
| Number of connection types | 1 |
| Number of levels | 1 |
Connection data - Connection 1
| 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 | 0 ° |
| Pole number | 1 |
Physical data
| Pin spacing | 7.5/7.62 mm / 0.295/0.3 inches |
|---|---|
| Width | 10.3 mm / 0.406 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 | 4 mm |
| Solder pin dimensions | 0.7 x 0.7 mm |
| Drilled hole diameter with tolerance | 1.1 (+0.1) mm |
PCB contact
| PCB contact | THT |
|---|---|
| Solder pin arrangement | within the terminal block (in-line) |
| Number of solder pins per potential | 2 |
Material data
| Note (material data) | Information on material specifications can be found here |
|---|---|
| Color | gray |
| 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 | 0.028 MJ |
| Weight | 1.4 g |
Environmental requirements
| Limit temperature range | -60 … +105 °C |
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Commercial data
| Product Group | 4 (Printed Circuit Connectors) |
|---|---|
| PU (SPU) | 400 (100) pcs |
| Packaging type | box |
| Country of origin | PL |
| GTIN | 4044918412889 |
| Customs tariff number | 85369010000 |
Product Classification
| UNSPSC | 39121409 |
|---|---|
| eCl@ss 10.0 | 27-44-04-01 |
| eCl@ss 9.0 | 27-44-04-01 |
| ETIM 9.0 | EC002643 |
| ETIM 10.0 | EC002643 |
| ECCN | NO US CLASSIFICATION |
Environmental Product Compliance
| RoHS Compliance Status | Compliant,No Exemption |
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