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Relay & Relay Box

Relays are electromechanical switches that use a small electrical signal to control a larger electrical load, while also offering electrical isolation and protection. They provide the ability to switch high-power circuits by using a smaller signal, making them essential components in a multitude of applications. Relay boxes are designed to house and protect relays, providing an organized way to manage multiple relays in a single system. They are often designed to provide environmental protection, and they make it easier to install, access, and troubleshoot relays in various electrical and electronic systems.

Product Catalog

KH180 Series 12V 120A/200A 4Pin Automotive Relay

The automotive relay is a 4-pin relay, Nominal Voltage(VDC): 12V, Max Applicable Voltage (VDC): 15.6V, and Switching Current: 120A / 200A.

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9038 Fuel Pump Relay Bypass Master Kit – Diagnostic Tester Scan Tool & Switch – Replaces 9036, 9037

This 9038 fuel pump relay bypass master kit is an essential diagnostic tool for automotive workshops, providing six distinct switches (replacing types 9036, 9037) to bypass and test a wide array of relays with multiple amperage options.

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JD1912-FAN1 12V 40A Electric Cooling Fan Relay Wiring Harness Kit with Thermostat Switch 185 On 175 Off

This 12V 40A electric cooling fan relay kit features a 3/8" NPT temperature switch activating at 185°F (off at 175°F), a 20A fuse, and a 35" pre-wired harness with 14AWG power wires for robust performance.

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WKQ-175-185 3/8″ NPT Fan Thermostat Temperature Switch 185 ON / 175 OFF Engine Coolant Fan Sensor for 10″ 12″ 14″ 16″ Fan

This 3/8" NPT fan thermostat temperature switch, activating cooling fans at 185°F and deactivating at 175°F, is compatible with various 10-16 inch fans and a wide range of popular engines.

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JD1914-W12V Automotive Waterproof Heavy Duty 5Pin SPDT 30/40A 12V Pre-wired Car Relay with Built-in Diode

The waterproof 5Pin 30/40A pre-wired car relay is rated for normal open 40A, normal closed 30A in 12V DC, SPDT and 5 Pin with built-in diode

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JD1914-2 12V 30A ON/OFF 4 Pin SPST Relay

The SPST relay is a 4Pin 12V 40A relay with a 30A fuse DC SPST fused relay normally open 1NO for car, motor and automobile.

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JD1912-W12V Waterproof 30A/40A SPDT 4Pin 12V Relay with 14 AWG Harness Socket

This waterproof 4-pin SPDT 30A/40A 12V relay with harness socket offers easy wiring with color-coded, tinned wires, a secure interlocking design, and durable construction perfect for automotive, marine, and outdoor applications.

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JD1213 12VDC 40A 4-Pin or 5-Pin Relay Kits with Wired Socket

The 12VDC 40A 4-Pin or 5-Pin relay kits feature a secure interlocking design with insulated label wires for safe and convenient accessory wiring.

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CRT-707 Automotive Relay Tester for 12 Volt 4 and 5 Pin Relays with LED Indicator

This automotive relay tester is a diagnostic tool designed to provide a quick and reliable method for testing the functionality of common 12-volt, 4-pin and 5-pin automotive relays.

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Daier’s Relay & Relay Box

Versatile Relays, Dependable Control

Daier relays and relay boxes are engineered to provide reliable, high-performing, and safe switching within demanding electrical and electronic systems. Daier offers a comprehensive range of options, including relays with various contact configurations (SPDT, SPST, DPDT), a multitude of voltage options, and relay boxes that can house up to 24 individual relays. Many relay boxes offer environmental protection, to ensure long-lasting reliability, and are designed with integrated fuse and diode protection to simplify systems. Consider Daier relays and relay boxes for all applications where precise, reliable, and safe switching is required.

Key Features and Benefits

The varied selection includes automotive, general purpose and sealed relays. This ensures that all projects will have an available and effective option, that can be integrated into a system.
A selection of contact options, including: SPDT, SPST, and DPDT options will provide the flexibility and customization needed for all designs.
Daier relays are designed to be integrated into multiple different systems, therefore, they are available with a variety of voltage options to match specific requirements.
Many relay boxes feature both waterproof and dustproof designs that provide enhanced protection for relay components, which increases their operational life.
Both screw mount and DIN rail mounting options allow for streamlined design and a seamless integration into systems.
Integrated fuse and diode protection in many relay boxes helps to simplify circuit designs and ensure the highest level of performance and protection.
Daier products are engineered to have a long electrical and mechanical life, reducing maintenance costs, while also providing a reliable and long lasting service.
All Daier relays and relay boxes are designed to meet stringent and applicable industry standards to ensure dependable and safe operation. Specific product certifications are available in the product specifications.

Typical Applications

Automotive Control Systems

Automotive Control Systems

Industrial Automation

Industrial Automation

Power Distribution Systems

Power Distribution Systems

Telecommunications Equipment

Telecommunications Equipment

Renewable Energy Systems

Renewable Energy Systems

Medical Equipment

Medical Equipment

Daier is committed to providing high-quality and reliable components. Daier relays and relay boxes are engineered to provide dependable and high performing switching and protection, with a focus on long lasting performance and enhanced safety. Please contact our expert team today to discuss your specific project requirements, explore customized solutions, or to request a personalized quote.

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