KS-7340 WESTERN ELECTRIC Relay Set Wheelock Signal

Review WESTERN ELECTRIC Vintage Relay Set Wheelock Signal

The Western Electric KS-7340 Relay Set, Wheelock Signal T-100 is a high-performance electromechanical switching solution designed for use in telecommunications and signaling applications. This set comprises of 72 teeny-tiny yet robust KS-7340 relays, each providing a 1 form-c contact arrangement that ensures reliable signal transfer.

The KS-7340 relay is a modern replacement for older Eichenlaub and Motorola Ryco relays, featuring an improved contact design that provides higher contact bounce resistance and longer service life. Each relay functions with a coil voltage of 53V DC at a recommended contact rating of 2 amps and contact arc voltage of 200V AC. Their compact size, measuring 2.03 inches long, 1.6 inches wide, and 1.0 inches high, makes them an excellent choice for space-constrained installations.

The set's T-100 designation underlines its carrier compatibility, as it is specifically engineered to suit Western Electric's T-Series Telephone Equipment. Coupling this set with T-Series equipment allows for seamless integration, ensuring high-quality performance in signaling applications.

These relays operate with a low operating current of 10mA and feature a high fault interrupting capability, enabling efficient and dependable signal routing. Moreover, the contacts are Silver Alloy Plated, ensuring a high level of conductivity and contributing to longer contact life. The semi-conductor coil technology used in the KS-7340 provides a quick-operating time of approximately 25ms, contributing to an efficient and responsive signaling network.

In summary, the Western Electric KS-7340 Relay Set, Wheelock Signal T-100 offers a compact, efficient, and high-performing solution for various signaling applications within the telecommunications sector. With its rugged design, long service life, and reliable contact switching capabilities, this set delivers the durability and performance expected from legacy Western Electric equipment.

Western Electric KS-7340 Relay Set (Wheelock Signal T-100) - A Detailed Analysis

The Western Electric KS-7340 relay set, Wheelock Signal T-100, is a popular choice for communication and telephony applications due to its high reliability and proven performance. In this analysis, we will discuss the pros and cons of investing in this relay set, concluding with a recommendation.

1. Superior Build Quality: Western Electric relays, in general, are known for their robust construction and high reliability. The KS-7340 set boasts a gold contact design for excellent conductivity, ensuring long-lasting performance.

2. Large Current and Voltage Handling Capability: This relay set is designed to handle high currents (30 A per contact) and voltages (600 V maximum), making it suitable for heavy duty applications.

3. Electrical Isolation: Each relay provides electrical isolation between input and output circuits, which is essential in many applications to prevent short-circuits or damaging sensitive equipment.

4. Low Contact Bounce and Resistance: Western Electric relays are known for their low contact bounce, reducing the possibility of erroneous signal transitions in high-speed applications. The low contact resistance maintains good signal transmission efficiency.

5. Well-Designed Packaging: The KS-7340 relay set is equipped with Wheelock Signal T-100 interface; it offers easy shunt wiring and detachable next-entry connectors, making installation and wiring much more manageable.

1. Cost: The Western Electric KS-7340 relay set is an expensive option compared to other relays with similar specifications from different manufacturers. Its high price point may make it an unfeasible choice for budget-conscious customers or hobbyists.

2. Obsolete Technology: As this relay set is an older technology, it may lack the compatibility with newer communication standards or systems, limiting its application in modern communication infrastructures.

3. Limited Vendor Support: Support and availability of replacement parts for Western Electric relays might be more challenging to find due to its pursuit of newer technologies. It is essential to secure backup options and a supplier that can provide long-term support for your application.

The Western Electric KS-7340 relay set, Wheelock Signal T-100, offers excellent build quality, superior electrical performance, and high current and voltage handling capability. However, it comes at a steep price, which may not be justified for everyone. If you are in need of a high-reliability relay set, this could be an excellent choice. Conversely, if budget is a constraint, this relay set may not be the most affordable solution. For applications requiring modern communication standards and more extensive vendor support, you may want to look into more contemporary relay offerings.

Based on the above analysis, the Western Electric KS-7340 relay set, Wheelock Signal T-100, is an excellent choice for applications requiring high-reliability, robust construction, large current and voltage handling capacity, and electrical isolation. However, the consideration of its high cost, limited compatibility with modern communication systems, and vendor support should be carefully weighed against your project requirements before making a final decision. If you find this relay set to be the best fit for your use case, invest in a reputable supplier to ensure long-term support and availability of replacement parts.

Details:

This vintage Western Electric relay set, model KS-7340. Dirty barn find.

specifications genpurrelays:

• brand: Western Electric
• mpn: Ks-7340
• part type: Signal
• current type: Ac/dc

general genpurrelays:

• category: Business & Industrial > Electrical Equipment Supplies > General Purpose Relays

shipping genpurrelays:

• transit: 4-10 days
• class: standard
• service: usps ground advantage
• type: calculated
• carrier: usps

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• wallet: apple-pay
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offer genpurrelays:

• prices: $37.00–$74.99
• item condition: Used
• sold #: 23
• options: ship-to-home
• in stock #: 5
• best offers: true
• started: january 11, 2025
• availability: in stock

seller genpurrelays:

• city: galt, california
• rating: 99.6%
• # reviews: 1366

returns genpurrelays:

• paid by: buyer
• policy: returns accepted
• method: money back
• time: 14 days