
702U Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $24.95 | Condition is New, Sdc Key Switch 702u-6 finish 630 Stainless Steel, shipping cost = $10.00 | 100.0% |
![]() | $55.00 | Condition is New, SDC 702U Key Switch,2-7/8 in. W, Momentary SPDT 45LY29, shipping cost = $6.21 | 100.0% |
![]() | $101.99 | Condition is New, Sdc 702U Key Switch, 2-7/8 In. W, Momentary Spdt, FREE SHIPPING | 99.8% |
![]() | $120.00 | Condition is New, SDC 702U Key Switch,2-7/8 in. W, Momentary , FREE SHIPPING | 100.0% |
![]() | $104.13 | Condition is New, Security Door Controls (SDC) - 702U L2 - 6 Amp Key Switch Assembly, Single, shipping cost = $17.60 | 98.8% |
![]() | $129.97 | Top Pick! Condition is New, Sdc Key Switch,2-7/8 in. W, Momentary SPDT 702U Sdc 702U Stainless Steel, FREE SHIPPING | 99.6% |
![]() | $134.70 | Top Pick! Condition is New, SDC 702U Key Switch,2-7/8 in. W, Momentary SPDT 45LY29, FREE SHIPPING | ![]() |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $25.00 | Condition is For parts or not working, SDC KEY SWITCH 702U (FOR PARTS), shipping cost = $5.95 | 100.0% |

The SDC 702U key switch is a versatile and high-performing momentary switch designed for various applications. This SPDT (Single Pole Double Throw) switch comes with a 45LY29 actuator, making it a 2-7/8 inch square switch. The momentary action of the switch means that it only closes when pressure is applied to the actuator, making it ideal for use in applications where a continuous contact is not required.
The SDC 702U switch is built with a robust design and high-quality components. It features a silver contact that ensures reliable and consistent conductivity, making it suitable for use in various industrial, electronic, and automotive applications. The switch's actuator has a smooth and tactile feel, providing an intuitive user experience.
The switch is housed in a durable and weather-resistant polycarbonate body that can withstand harsh environments. It is also RoHS compliant and has a UL recognition, making it a safe and reliable choice for various applications. The switch is easy to install, with a standard M3 mounting screw pattern, and can be mounted in various orientations to accommodate different installation requirements.
The SDC 702U key switch is designed for high reliability and longevity, with a contact rating of up to 10,000 cycles. It can handle a maximum voltage of 24V DC and a maximum current of 1.5A. The switch is also rated for a temperature range of -20 C to 70 C, making it suitable for use in a wide range of temperature environments.
Overall, the SDC 702U key switch is a reliable and versatile momentary switch that is perfect for various industrial, electronic, and automotive applications. Its robust design, high-quality components, and user-friendly actuator make it a popular choice among engineers and technicians. Whether you're looking for a switch for a control panel, a dashboard, or a machine, the SDC 702U switch is an excellent choice.
Pros and Cons of Buying SDC 702U Key Switch (2-7/8 Momentary SPDT 45LY29)
The SDC 702U key switch (2-7/8 momentary SPDT 45LY29) is a popular choice for various applications due to its momentary action and SPDT configuration. This switch type offers several advantages and disadvantages, as discussed below.
Pros:1. Momentary action: Momentary switches are designed to be pressed and released quickly, making them ideal for applications requiring a one-time signal or control. The SDC 702U switch is no exception, ensuring fast response times and accurate switching.
2. SPDT configuration: SPDT (Single Pole Double Throw) switches allow the user to select between two options with just one switch. This configuration is versatile and useful in various projects, including audio systems, automotive applications, and control panels.
3. Small size: The SDC 702U switch is relatively small, making it easy to install in tight spaces or in applications where size is a concern.
4. Durable construction: The switch features a robust design with a metal housing and gold-plated contacts, ensuring long-lasting performance and excellent conductivity.
Cons:1. Limited current capacity: The SDC 702U switch is rated for a maximum current capacity of 45mA, which might not be sufficient for high-current applications.
2. Requires additional components: For some applications, additional components, such as diodes or resistors, might be necessary to ensure proper operation.
3. Limited mounting options: The switch comes with a standard 3/8-27 threaded shaft, which might not be compatible with all mounting configurations.
Conclusion:The SDC 702U key switch (2-7/8 momentary SPDT 45LY29) offers a compact, durable design with fast response times and versatile SPDT configuration. Its momentary action makes it suitable for various applications where a one-time signal or control is required. However, its limited current capacity and mounting options might pose challenges in some projects. Considering the advantages and disadvantages, this switch is an excellent choice for low- to medium-current applications where size and versatility are essential factors.
Recommendation:If your project requires a low- to medium-current momentary SPDT switch with a small footprint and fast response times, the SDC 702U key switch (2-7/8 momentary SPDT 45LY29) is an excellent option. However, if your application demands higher current capacity or specific mounting options, you might need to explore alternative switch types. Always double-check the specifications and compatibility of the switch with your project requirements before making a purchase.
Details:
Sdc 702U key switch, 1-gang, momentary spdt 6 amp, vandal resistant key cylinder recess - stainless steel. A choice of several contact configurations ensure compatibility with virtually any system. Standard switch assemblies are single gang box mounted. Heavy duty all steel assembly.
Large actuator for positive and consistent activation. Timer activation. Stainless steel face plates of 20 gauge. Momentary spdt: turning the key left or right momentarily actuates contact.
Tamper resistant spanner screws. Tamper resistant, recessed cylinder. Lock cylinder not included. 6 30 CDC restive.
Momentary access. 7, 22 gauge wire leads.
specifications indusswitch:
- brand: Sdc
- mpn: 702u
- type: Electromagnetic Lock Activation Devices
- fuse type: Switch
shipping indusswitch:
- class: economy
- service: ups ground saver
- carrier: ups
- transit: 7-13 days
- type: calculated
seller indusswitch:
- city: denver, colorado
- rating: 100.0%
- # reviews: 3
offer indusswitch:
- availability: in stock
- best offers: true
- started: february 11, 2025
- options: ship-to-home
- prices: $24.95–$134.70
- item condition:
- New
- For parts or not working
- sold #: 18
- in stock #: 5
payments indusswitch:
- credit card: mastercard
- wallet: google-pay
- other
general indusswitch:
- category: Business & Industrial > Electrical Equipment Supplies > Pushbutton Switches
returns indusswitch:
- time: 30 days
- method: money back
- paid by: buyer
- policy: returns accepted
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