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LUMBERG KFR506 Circular Connectors

The KFR series circular connectors are designed for industrial environments, featuring threaded joints conforming to IEC 61076-2-106. These IP40-rated chassis sockets are suitable for front mounting on printed circuit boards. Constructed with durable materials like PA GF and zinc diecast, they operate within -40°C to +85°C. Equipped with silver-plated, gold-plated, and tin-plated contacts, these connectors ensure reliable electrical performance. They support rated currents up to 5A and rated voltages up to 300V, with high overvoltage and insulation resistance, making them ideal for automation and control applications.

Authorized Distributors
Source:Newark
Part No:KFR 50/6
Stock:20
Inv Date:06-15-2026
Price: Unit price: $1.15
Buy/RFQ:
Source:DigiKey
Part No:KFR 50/6
Stock:88
Inv Date:06-15-2026
Price: Unit price: $7.65
Buy/RFQ:
Part No:KFR 50/6
Stock:0
Inv Date:06-15-2026
Price: Unit price: $4.99
Buy/RFQ:

LUMBERG KFR506 Circular Connectors Specifications:

  • Operating Temperature Range: -40°C to +85°C
  • Materials: Insulating body PA GF V-0 UL94, Contact bush CuZn silver/gold/tin-plated, Housing Zn diecast, Ring screw CuZn nickel-plated
  • Connector Thread: M16x0.75
  • Insertion Force: 5.0N, Withdrawal Force: 2.12N, M16x0.75: 0.9N
  • Tightening Torque: +3Nm
  • Protection Class: IP40, IP67/IP68 in specific configurations
  • Rated Current: 5A (3-8 poles), 3A (12 poles)
  • Rated Voltage: up to 300V depending on version, Pollution Degree 1/2
  • Contact Resistance: ≤5mΩ
  • Overvoltage Category: CAT I
  • Insulation Resistance: >100MO
  • Impulse Voltage: 1500V (some versions), 500V (others)

Buy the Lumberg KFR – Reliable Circular Connectors for Industrial Applications

Enhance your industrial setups with Lumberg KFR circular connectors, featuring threaded joints, IP40/IP67/IP68 ratings, durable materials, and reliable electrical specifications. Perfect for PCB mounting in automation, machinery, and control systems, these connectors support rated currents up to 5A and voltages up to 300V. Their robust construction ensures stability in harsh environments, meeting IEC standards for safety and performance. Shop online today for quick delivery and superior connectivity solutions for your projects.

Order your Lumberg series KFR circular connectors today and equip your control systems with dependable, durable, and high-performance industrial connections.

Frequently Asked Questions

Where can I buy LUMBERG KFR506?

You can click on the BUY or RFQ button to purchase KFR506 from an authorized LUMBERG distributor.

How do I troubleshoot issues or seek technical support for part KFR506?

You can download the KFR506 datasheet or visit the LUMBERG website for support.

Who is the manufacturer of KFR506?

LUMBERG

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