*mydirectindustry

Keylocks

Product catalog summary

Overview: The document outlines the specifications and features of the CK and SK series keylocks by NKK Switches, focusing on high-security and low-to-medium security applications. It covers electrical capacity, mechanical and electrical life, materials, environmental data, installation guidelines, and ordering examples.

CK Series High Security Keylocks:

Specifications: Available in 16mm and 19mm sizes, with a power level of 3A at 250V AC. Features include solder lug terminals and bushing mount.
Electrical and Mechanical Ratings: Contact resistance is 20 milliohms max, insulation resistance is 1,000 megohms min at 500V DC, and dielectric strength is 1,000V AC min between contacts.
Materials: Keys are made of brass with nickel or chrome plating, and the housing is made of glass fiber reinforced PBT or zinc alloy.
Environmental Data: Operating temperature ranges from -25°C to +70°C, with humidity resistance and vibration and shock specifications provided.
Distinctive Features: High dielectric strength, antistatic features, and a push-and-lock mechanism for tubular keys.

SK Series Low & Medium Security Keylocks:

Specifications: Available in 12mm size, with power levels of 3A at 125V AC for low and medium security, and 1A at 250V AC for low security.
Electrical and Mechanical Ratings: Contact resistance is 10 milliohms max, insulation resistance is 1,000 megohms min at 500V DC, and dielectric strength is 1,000V AC min between contacts.
Materials: Keys and tumbler barrels are made of zinc alloy with chrome plating, and the base is made of phenolic resin.
Environmental Data: Operating temperature ranges from -25°C to +70°C, with humidity resistance and vibration and shock specifications provided.
Distinctive Features: High dielectric strength, dust-resistant construction, and a detent mechanism for accurate switch setting.

Ordering Information: Examples of typical switch ordering codes are provided, detailing configurations for circuits, key-removable positions, contact materials, and lock mechanisms.

SK Series Keylocks Detailed Specifications:

Security Mechanisms: Low and medium security options with 90° and 45° angular throws.
Contact Materials: Silver over silver for power level applications and gold over bronze or copper for logic level applications.
Electrical Ratings: Power level rated at 3A @ 125V AC; logic level rated at 0.4VA @ 28V AC/DC.
Mechanical and Electrical Life: 30,000 mechanical cycles and 20,000 electrical cycles minimum.
Environmental Data: Operating temperature range from -25°C to +70°C, with humidity resistance of 90-95% for 240 hours at 40°C.

Materials and Construction:

Key: Made of polyacetal.
Housing/Bushing: Glass fiber reinforced polyester (PBT).
Base: Glass fiber reinforced polyamide.
Contacts: Beryllium copper and phosphor bronze with gold plating.

Distinctive Features:

Antistatic protection withstanding 15 kilovolts ESD.
Sealed construction with internal o-ring and gasket for protection during automated processing.
Subminiature size for high-density mounting.
Bifurcated, self-wiping contact mechanism for reliable logic-level performance.

Standards and Certifications: The SK Series devices are not tested for UL recognition or CSA certification but are designed for low-voltage, low-current, logic-level circuits.

All NKK Switches catalogs and technical brochures

Archived catalogs

*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

Brand list