Wire Connector Harting 09 18 550 6813 SEK-18 SV Grey Thermoplastic Polyester

The Harting SEK-18 SV wire connector in grey is a compact, thermoplastic polyester (PBT) connection element intended for stable low-voltage electrical wiring. It is halogen-free, lightweight (approximately 6.14 g per piece) and supplied in packs of 100, which supports batch installation and maintenance work. The connector is suitable for intermediate wiring and compact terminal blocks where reliable contact and insulation are required.

Advantages

This wire connector is manufactured from thermoplastic polyester (PBT), offering good mechanical strength and thermal stability for typical electrical installation environments. Its halogen-free composition reduces toxic gas emission risk in case of fire, and the small form factor helps save space in dense assemblies. Supplied in bulk packs of 100 pieces, it simplifies procurement for repetitive installations and reduces handling time on site.

Suitable for

• Low-voltage wiring in industrial and automation panels
• Terminal block assemblies and compact junctions
• Batch installation and repair tasks where multiple identical connectors are required
• Applications that require halogen-free insulation materials

When it may not be suitable

This connector is specified for low-voltage, low-current applications and is not intended for high-voltage or high-current power distribution. It may not be appropriate where specific environmental certifications, extreme temperature ratings, or specialized sealing against moisture and dust are required unless additional protective measures are applied.

Key specifications

• Material: thermoplastic polyester (PBT), halogen-free
• Color: grey
• Approximate weight: 6.14 g per piece
• Rated voltage: 320 V
• Rated current: 2.5 A
• Conductor accommodation: suitable for multi-stranded conductors (example: 28/7 configuration)
• Pack quantity: 100 pieces

How to use

Prepare conductors by stripping the appropriate length of insulation and, if required, tin or ferrule the stranded ends to improve contact reliability. Insert each conductor into the connector until a positive stop is felt and ensure secure mechanical retention. Verify electrical continuity and correct polarity (where applicable) before energising the circuit. For bulk installations, store connectors in their original packaging until use to prevent contamination and simplify inventory tracking.

What to consider before purchase

• Confirm that the rated voltage (320 V) and current (2.5 A) meet your circuit requirements
• Ensure conductor size and type are compatible with the connectors contact design (e.g., 28/7 multi-stranded)
• Assess environmental conditions—if exposure to moisture, chemicals, or extreme temperatures is expected, plan for additional protection
• Verify that a bulk pack of 100 pieces aligns with project quantity needs

Lietošanas ieteikumi

The connector performs best in clean, dry assemblies; for long-term reliability, avoid mechanical strain on terminated conductors and include strain relief or cable management where applicable.