302WP-1AH-C M02 Relay by Sonzrod 12VDC 20A SPST Plug‑in (2‑Pack)

Description

Product Overview

Designed for demanding residential and commercial applications, the Sonzrod 302WP-1AH-C M02 Relay delivers dependable 12VDC plug‑in power switching with a robust 20A rating. Its compact dimensions of 1.2 × 0.5 × 1.5 inches and lightweight 1.45 oz profile allow it to fit into tight control panels while maintaining excellent thermal performance. The relay’s SPST (single pole single throw) configuration supports 125 V AC up to 20 A or 250 V AC up to 17 A, making it suitable for a wide range of loads including microwave ovens, electric water heaters, and HVAC compressors. Constructed from UL/CSA‑certified thermoplastic, the housing resists temperatures up to 185 °F and dampens vibration, extending service life in harsh environments. The 1/2‑inch pin spacing conforms to standard M02 and M07 sockets, ensuring a seamless drop‑in replacement for OEM parts such as Song Chuan 302WP‑1AH‑C, Omron G5RL‑1A‑E, and Panasonic HC2‑HP models.
Beyond its electrical capabilities, the relay incorporates a precision‑engineered coil that minimizes inrush current and provides rapid actuation, reducing wear on downstream components. The internal contacts are silver‑plated to guarantee low resistance and reliable conductivity over thousands of cycles. With a clear labeling system on the housing, installers can quickly identify coil voltage, contact rating, and pin configuration, simplifying troubleshooting and maintenance. The device is packaged as a two‑pack, offering cost‑effective redundancy for critical circuits where a single point of failure could interrupt service. Each unit carries the Sonzrod brand assurance of strict quality control, and the batch is traceable through the ASIN B0FL88SLST for inventory management.
Environmental durability is further enhanced by the relay’s sealed contact chamber, which protects against dust ingress and moisture accumulation that can degrade performance over time. The unit complies with RoHS directives, ensuring that hazardous substances such as lead and mercury are absent from its construction. Packaging includes anti‑static bags and clear labeling to prevent electrostatic discharge during handling. For bulk purchasers, Sonzrod offers inventory tracking through its integrated barcode system, simplifying reorder processes and reducing stock‑out risks.

Usage

The 302WP-1AH-C M02 Relay is ideally suited for replacing failed relays in microwave ovens that display the common “F3” fault code, indicating a relay malfunction. By installing this relay, technicians restore the high‑current heating element circuit, allowing the appliance to resume normal cooking cycles. Installation requires only a standard screwdriver to release the existing relay from its socket, after which the new plug‑in unit is aligned with the 1/2‑inch pins and seated firmly. No soldering or rewiring is necessary, reducing downtime and labor costs.
In water heating systems, the relay controls the power to the heating element, and an “EC‑5” error in Carrier HVAC units often points to a faulty relay. The Sonzrod relay’s 20 A rating comfortably handles the element’s load, and its heat‑resistant housing protects against the elevated temperatures typical in boiler rooms. Users should verify that the power supply is disconnected before removal, then insert the new relay, ensuring the coil polarity matches the original. After confirming a secure fit, power can be restored and the system tested for proper operation.
For HVAC compressors and fan motors, the relay acts as the primary switching device that engages the compressor during cooling cycles. Its ability to manage 125 V AC at 20 A makes it compatible with most residential furnace control boards. The plug‑in design allows quick swaps during routine preventive maintenance, and the UL/CSA certification gives peace of mind that the component meets industry safety standards. When paired with Sonzrod’s recommended surge protection, the relay contributes to a longer overall system lifespan.
After installation, it is advisable to perform a functional test using a multimeter to verify coil continuity and correct contact operation before the appliance is returned to service. For microwave ovens, a quick power‑on test can confirm that the heating element receives voltage when the timer elapses. In HVAC applications, monitoring the compressor’s start‑up current with a clamp meter helps ensure the relay is not introducing excessive resistance, which could lead to overheating. Should any irregularities appear, the relay can be swapped with the spare unit from the two‑pack, allowing immediate restoration of operation while the original is inspected.

Why Choose Us

Choosing the Sonzrod 302WP-1AH-C M02 Relay means selecting an OEM‑direct replacement that matches the exact specifications of the original part, eliminating compatibility concerns. The relay’s cross‑compatibility with leading brands such as Omron and Panasonic provides flexibility for inventory managers who service multiple appliance lines, while maintaining the same performance characteristics.
Each relay undergoes rigorous testing for coil resistance, contact endurance, and thermal cycling before it leaves the factory. This quality assurance process ensures that the unit meets or exceeds the original equipment manufacturer’s standards, delivering consistent reliability even in high‑demand applications. The thermoplastic housing’s resistance to heat and vibration further reduces the likelihood of premature failure.
Sonzrod stands behind its products with a responsive customer support team and a straightforward warranty policy. Should a buyer encounter any issues during installation or operation, technical specialists are available to provide guidance, replacement parts, or refunds in accordance with the warranty terms. This commitment to service underscores the brand’s dedication to long‑term customer satisfaction.
Sonzrod is committed to sustainable manufacturing practices, utilizing recycled thermoplastic materials wherever feasible and optimizing production lines to reduce energy consumption. The company’s supply chain adheres to strict ethical standards, guaranteeing that all components are sourced from certified vendors who uphold labor and environmental regulations. Customers benefit from this responsible approach through products that not only perform reliably but also contribute to broader ecological goals, aligning with the growing demand for green building solutions.

Key Features

• Direct OEM match eliminates guesswork and ensures perfect fit
• 12VDC coil with SPST design handles up to 20A/125V AC or 17A/250V AC loads
• UL/CSA‑certified thermoplastic housing resists heat up to 185°F and vibration
• Resolves common “F3” microwave relay faults and “EC‑5” HVAC error codes
• Includes two‑pack for redundancy and backed by responsive after‑sales support

FAQ

How do I know if this relay is compatible with my appliance?

Check the original relay’s part number, coil voltage, and pin spacing. The 302WP-1AH-C M02 Relay matches Song Chuan 302WP‑1AH‑C, Omron G5RL‑1A‑E, and Panasonic HC2‑HP specifications, featuring a 12VDC coil and 1/2‑inch pin spacing that fits standard M02 sockets. If your appliance uses any of these OEM numbers or requires a 12VDC, 20A SPST relay, the Sonzrod unit will be a direct replacement.

What safety precautions should I take when installing the relay?

Always disconnect power at the circuit breaker before removing the existing relay. Use insulated tools to avoid accidental short circuits, and verify that the coil polarity matches the original marking. After seating the new relay, perform a continuity test with a multimeter to confirm proper coil connection before re‑energizing the system.

Can the relay be used in both 120V and 240V systems?

Yes. The relay’s contacts are rated for 125 V AC at up to 20 A and 250 V AC at up to 17 A, making it suitable for typical North American 120 V household circuits as well as 240 V appliances such as water heaters and certain HVAC compressors. Ensure the load does not exceed the specified current rating for the chosen voltage.

What is the warranty coverage and how do I claim it?

Sonzrod offers a one‑year limited warranty covering defects in materials and workmanship. To file a claim, contact the support team with the purchase receipt, product serial number, and a description of the issue. The team will guide you through troubleshooting steps and, if necessary, arrange a replacement or refund in accordance with the warranty policy.

Is the relay suitable for use in marine or outdoor environments?

The relay’s UL/CSA‑certified thermoplastic housing provides resistance to heat and vibration, but it is not specifically rated for direct exposure to saltwater or extreme outdoor conditions. For marine applications, additional protective enclosures with proper sealing are recommended to guard against corrosion and moisture ingress. In typical outdoor installations where the relay is housed inside a weather‑sealed control panel, it performs reliably.