3M 557 | Scotchlok Connectors from 3M Electrical

3M 557 | Scotchlok Connectors from 3M Electrical

IDC Connectors

3M Scotchlok 557

3M Scotchlok 557 IDC Pigtail Electrical Connectors provide a dual element connection. These 3M Insulation Displacement Connectors or IDCs are polypropylene insulated and used to connect 2 wires while insulating the connection. It is self stripping and flame retardant.

Scotchlok 557 IDC Connectors from 3M are intended for use with common thermoplastic insulated wire such as: T, TF, TFF, TFN, TFFN, AWM, TEW, SAE GPT with a maximum insulation diameter of 3.5 mm – the Scotchlok connectors are compatible with the 3M Electrical range of Scotchcast cable joints.

3M Scotchlok 557 is 600V rated for building wire and 1000V rated for signs, fixtures and luminaires. It is able to withstand temperatures of 221°F (105°C). The connectors are UL Listed, CSA Certified and RoHS 2011/65/EU Compliant.

View the complete range of 3M Scotchlok Connectors for the connection of low voltage cables, conductors and wires.

➡ Other connectors from Thorne & Derrick | Pfisterer Sicon (Shearbolt) | Cembre Splices & Lugs (Crimp Compression)

3M 557 | Connector Specification

The following table provides a specification overview of the type 557 Scotchlok connector manufactured by 3M Electrical.

Conductor Size
22 – 16 AWG
Connection Type Pigtail
Connector Style Insulation Displacement Connector
Flame Retardant? Yes
Insulation Material Polypropylene
Maximum Operating Temperature 105°C, 221°F
Maximum Recommended Voltage Rating 600V
Maximum Wire Gauge 16 AWG
Minimum Wire Gauge 22 AWG
Product Colour Red
Recommended Crimping Tool E-9BM
RoHS 2011/65/EU Compliant? Yes
Voltage Application Low Voltage
Water Resistant? No
3M Scotchlok Insulation Displacement Connectors

3M Scotchlok Insulation Displacement Connectors


3M Electrical | Cable Joints | Cable Terminations | Scotch Tape | Scotchcast Resins

Data Sheets