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RELAY AND CONTROL CORP.

Relay and Control Corp. is a manufacturer of manual drum switches and related control components used in industrial motor control circuits. The company's product line centers on reversing drum switches that provide forward, reverse, and center-off positions for single-phase and three-phase motors. These switches are typically specified where a simple, mechanical means of reversing motor rotation is required without the complexity of a contactor-based reversing starter. Relay and Control Corp. drum switches are available in maintained and momentary contact configurations, with two or three poles, and are housed in NEMA 1 enclosures for indoor use. The maintained versions stay in the selected position until manually changed, while momentary versions feature spring return to center-off for jogging or inching operations. Handle options include standard and stainless steel, depending on the model. 3G Electric supplies Relay and Control Corp. drum switches as part of its industrial control portfolio. The product range includes models such as the RS-1, RS-1A, RS-1M, RS-1A-SH, RS-1M-SH, RS-1A-MS, and RS-5, covering common reversing applications. These switches are used in conveyors, machine tools, hoists, pumps, and other equipment where manual direction control is needed. 3G Electric provides global logistics support for these SKUs, allowing buyers to source specific part numbers and quantities. The company serves plant engineers, maintenance managers, and procurement specialists who require documented specifications and reliable availability. For technical buyers, Relay and Control Corp. drum switches offer a straightforward solution for motor reversing tasks. The NEMA 1 enclosure rating indicates suitability for indoor environments where dust and light moisture are not primary concerns. The switches are designed for panel or surface mounting, with wiring terminals accessible for field connections. Contact ratings and electrical specifications vary by model, and users should verify compatibility with the motor's voltage, current, and horsepower requirements. 3G Electric maintains inventory and sourcing capabilities for Relay and Control Corp. products, supporting both standard and hard-to-find part numbers. The company's catalog includes detailed specifications for each SKU, enabling informed selection. By focusing on manual control devices, Relay and Control Corp. addresses a niche in industrial automation where simple, robust operation is preferred over electronic alternatives. This approach aligns with the needs of maintenance departments that value ease of troubleshooting and minimal downtime. 3G Electric's role as a distributor ensures that these components are available to a global customer base, with logistics and documentation support. The combination of Relay and Control Corp.'s product design and 3G Electric's supply chain capabilities provides a practical resource for industrial motor control applications.

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About RELAY AND CONTROL CORP.

Relay and Control Corp. is a manufacturer of manual drum switches and related control components used in industrial motor control circuits. The company's product line centers on reversing drum switches that provide forward, reverse, and center-off positions for single-phase and three-phase motors. These switches are typically specified where a simple, mechanical means of reversing motor rotation is required without the complexity of a contactor-based reversing starter. Relay and Control Corp. drum switches are available in maintained and momentary contact configurations, with two or three poles, and are housed in NEMA 1 enclosures for indoor use. The maintained versions stay in the selected position until manually changed, while momentary versions feature spring return to center-off for jogging or inching operations. Handle options include standard and stainless steel, depending on the model. 3G Electric supplies Relay and Control Corp. drum switches as part of its industrial control portfolio. The product range includes models such as the RS-1, RS-1A, RS-1M, RS-1A-SH, RS-1M-SH, RS-1A-MS, and RS-5, covering common reversing applications. These switches are used in conveyors, machine tools, hoists, pumps, and other equipment where manual direction control is needed. 3G Electric provides global logistics support for these SKUs, allowing buyers to source specific part numbers and quantities. The company serves plant engineers, maintenance managers, and procurement specialists who require documented specifications and reliable availability. For technical buyers, Relay and Control Corp. drum switches offer a straightforward solution for motor reversing tasks. The NEMA 1 enclosure rating indicates suitability for indoor environments where dust and light moisture are not primary concerns. The switches are designed for panel or surface mounting, with wiring terminals accessible for field connections. Contact ratings and electrical specifications vary by model, and users should verify compatibility with the motor's voltage, current, and horsepower requirements. 3G Electric maintains inventory and sourcing capabilities for Relay and Control Corp. products, supporting both standard and hard-to-find part numbers. The company's catalog includes detailed specifications for each SKU, enabling informed selection. By focusing on manual control devices, Relay and Control Corp. addresses a niche in industrial automation where simple, robust operation is preferred over electronic alternatives. This approach aligns with the needs of maintenance departments that value ease of troubleshooting and minimal downtime. 3G Electric's role as a distributor ensures that these components are available to a global customer base, with logistics and documentation support. The combination of Relay and Control Corp.'s product design and 3G Electric's supply chain capabilities provides a practical resource for industrial motor control applications.

Common Applications

  • Conveyor systems — RS-1 three-phase maintained reversing drum switch for manual direction control of conveyor motors.
  • Machine tools — RS-1A single-phase maintained reversing switch for forward/reverse operation of small machine tool motors.
  • Hoists and cranes — RS-5 three-pole maintained reversing switch for three-phase hoist motor control.
  • Pumps — RS-1M three-phase momentary reversing switch for jogging pump motors during maintenance or priming.
  • Packaging equipment — RS-1A-MS single-phase momentary reversing switch with stainless steel handle for frequent jogging operations.
  • Food processing — RS-1A-SH single-phase maintained reversing switch with stainless steel handle for washdown-adjacent areas (NEMA 1 enclosure).

Guides & Resources

Frequently asked questions

Common questions about RELAY AND CONTROL CORP. from 3G Electric.

What is the difference between maintained and momentary drum switches from Relay and Control Corp.?

Maintained drum switches, such as the RS-1 and RS-1A, stay in the selected position (forward, reverse, or off) until manually turned to another position. Momentary switches, like the RS-1M and RS-1A-MS, have a spring-return mechanism that returns the handle to the center-off position when released. Momentary operation is typically used for jogging or inching, where the motor runs only while the handle is held. Maintained operation is for continuous run applications where the motor must remain in the selected direction. Both types are available in NEMA 1 enclosures and with various pole configurations.

What are the NEMA 1 enclosure ratings for Relay and Control Corp. drum switches?

Relay and Control Corp. drum switches are supplied in NEMA 1 enclosures, which are intended for indoor use and provide a degree of protection against limited amounts of falling dirt. They are not rated for outdoor environments, washdown, or hazardous locations. For applications requiring higher protection, alternative enclosures or additional measures may be necessary. The NEMA 1 rating is common for general-purpose industrial control panels and machinery where the environment is relatively clean and dry. Users should confirm that the enclosure rating meets the specific environmental conditions of the installation.

Can Relay and Control Corp. drum switches be used for both single-phase and three-phase motors?

Yes, Relay and Control Corp. offers drum switches for both single-phase and three-phase motors. For example, the RS-1 and RS-1M are designed for three-phase applications, while the RS-1A and RS-1A-MS are for single-phase motors. The number of poles and the internal contact arrangement differ between these types to suit the motor's wiring. It is important to select the correct switch model for the motor type and voltage. The product specifications indicate the phase and pole configuration, and users should verify compatibility with their specific motor and control circuit.

What is the purpose of the stainless steel handle option on some Relay and Control Corp. drum switches?

The stainless steel handle option, available on models such as the RS-1A-SH, RS-1M-SH, and RS-1A-MS, provides a more durable and corrosion-resistant handle compared to standard handles. This can be beneficial in environments where the switch may be exposed to moisture, chemicals, or frequent operation. The stainless steel handle does not change the electrical ratings or operation of the switch; it is a mechanical enhancement. The choice between standard and stainless steel handles depends on the specific application requirements and the user's preference for durability and appearance.

How do I select the correct Relay and Control Corp. drum switch for my application?

Selection depends on several factors: motor type (single-phase or three-phase), required operation (maintained or momentary), number of poles, and enclosure type. For three-phase motors, choose a three-phase switch like the RS-1 or RS-1M. For single-phase, use the RS-1A series. If jogging is needed, select a momentary model. The number of poles must match the motor's winding configuration. Additionally, verify the switch's voltage and current ratings against the motor's full-load current. 3G Electric provides detailed specifications for each SKU to assist in selection, and technical support is available for specific questions.

What are typical applications for Relay and Control Corp. drum switches?

Relay and Control Corp. drum switches are commonly used in industrial settings for manual forward/reverse control of motors on conveyors, machine tools, hoists, cranes, pumps, and other equipment. They are also found in packaging machinery, material handling systems, and food processing equipment where simple, reliable reversing control is required. The switches are suitable for indoor use in NEMA 1 environments. Because they are manual devices, they are often used in applications where automatic control is not necessary or where a backup manual control is desired. The specific model chosen depends on the motor and operational requirements.