DURALAST 20138 Safety Switch Battery Disconnect Surge 193460269657 250A Continuous/ 750

( Brand: Duralast ), ( Manufacturer Part Number: 20138 ), ( Type: Battery Disconnect Switch ), ( Unit Type: Unit ), ( Connector Style: Disconnect ), ( Contact Material: Copper ), ( Material: Metal ), ( UPC: 193460269657 )

Review DURALAST 2013 Safety Switch Battery Disconnect Dl 250a Continuous/ 750 Surge

The **Duralast 20138 Safety Switch Battery Disconnect (250A Continuous / 750A Surge)** is a robust, high-performance electrical disconnect switch designed to provide reliable protection and control for residential, commercial, and light-duty industrial applications. Engineered with a durable, heavy-duty construction, this switch features a robust metal housing and reinforced internal components to ensure long-lasting durability and resistance to environmental factors such as moisture, dust, and vibration. Its compact yet sturdy design allows for easy installation in tight spaces, making it ideal for battery systems, solar setups, or backup power configurations where space efficiency is a priority.

At the heart of this disconnect switch is a **250-amp continuous rating**, ensuring it can handle the steady current demands of most electrical loads without overheating or failing, while its **750-amp surge rating** provides an additional layer of protection against temporary power spikes, such as those caused by motor startup or lightning strikes. This dual-rating capability makes it well-suited for applications where both regular operation and occasional high-current events are a concern. The switch operates smoothly with a single-pole, double-throw (SPDT) mechanism, allowing for clean and efficient on/off control of battery circuits while maintaining a secure, isolated disconnect when needed for maintenance or safety.

Safety is a top priority with this disconnect switch, featuring a **positive-locking mechanism** that prevents accidental engagement or disengagement, reducing the risk of electrical hazards. The switch is equipped with **clear visual indicators**, such as a visible blade position and often a built-in test button, to confirm proper operation and ensure users can quickly verify the status of the circuit. Additionally, its **corrosion-resistant materials** and **weatherproof enclosure** (when installed in appropriate environments) enhance its reliability in demanding conditions, making it a dependable choice for both indoor and outdoor applications.

Whether used in a home battery backup system, a solar power installation, or as part of a larger electrical distribution panel, the Duralast 20138 offers a blend of performance, safety, and ease of use. Its **NEMA 1-rated enclosure** provides basic protection against dust and accidental contact, while its **quick-connect terminals** simplify wiring and reduce installation time. Built to meet strict industry standards, this disconnect switch delivers peace of mind with every use, ensuring that your electrical system remains protected, efficient, and ready for operation whenever needed.

### **Pros and Cons of buying a Duralast 20138 Safety Switch Battery Disconnect (250A Continuous / 750A Surge)**

1. **High Amperage Rating** The 250A continuous and 750A surge rating makes this switch suitable for large electrical loads, including heavy-duty appliances, electric vehicles, or high-capacity solar setups. This ensures it can handle significant power demands without overheating or tripping prematurely.

2. **Safety Features** As a battery disconnect switch, it provides an easy and reliable way to isolate the battery from the electrical system. This is critical for safety during maintenance, preventing accidental shocks or short circuits when working on wiring or components.

3. **Durability and Quality** Duralast is a well-known brand in the electrical industry, known for producing reliable, high-quality switches and disconnects. The construction is likely robust, with materials designed to withstand frequent use and environmental exposure.

4. **Easy Installation** Designed for straightforward mounting (likely on a panel or directly on a battery), this switch is intended to be user-friendly, reducing installation complexity for DIYers or professionals.

5. **Surge Protection** The 750A surge rating indicates it can handle temporary spikes in current, which is useful in systems with motors, inverters, or other devices that draw high initial currents.

6. **Compatibility** Suitable for a variety of applications, including marine, RV, solar, or residential off-grid systems, making it versatile for different setups.

7. **Manual Operation** Being a manual switch, it provides direct control without relying on electronics, reducing the risk of failure from power surges or malfunctions.

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1. **High Cost** Compared to basic battery disconnects or even some lower-rated switches, this model is likely more expensive. The premium price may not be justified for small-scale or low-power applications.

2. **Overkill for Small Systems** If your electrical system rarely exceeds 250A (e.g., a small off-grid cabin with minimal loads), this switch may be unnecessarily powerful, leading to wasted capacity and higher costs.

3. **Physical Size and Space Requirements** High-amperage switches are often larger and bulkier than standard switches. This could be a limitation in tight spaces or pre-fabricated panels where space is constrained.

4. **Potential for Overuse of Features** The surge rating (750A) is significantly higher than the continuous rating (250A). While useful for occasional spikes, constantly operating near the surge limit could reduce the switch s lifespan or lead to unnecessary wear.

5. **Maintenance Needs** Heavy-duty switches may require periodic inspection to ensure contacts remain clean and free of corrosion, especially in humid or corrosive environments (e.g., marine or outdoor setups).

6. **Not Ideal for All Applications** If your system requires automatic disconnects (e.g., for safety or remote control), this manual switch won t suffice. You d need a separate relay or automatic switch for that functionality.

7. **Potential for Misuse** The high rating might tempt users to connect loads beyond the switch s continuous capacity, risking overheating or failure. Clear labeling and user education are essential to avoid this.

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The **Duralast 20138 Safety Switch Battery Disconnect** is a robust, high-performance solution ideal for **large electrical systems, heavy-duty applications, or environments where safety and reliability are paramount**. Its 250A continuous and 750A surge ratings make it well-suited for demanding setups like solar installations, electric vehicle charging, or marine/RV systems with substantial power demands. The brand s reputation for quality and the switch s safety features further enhance its appeal for users prioritizing durability and ease of use.

However, for **smaller systems, budget-conscious projects, or applications where high amperage isn t necessary**, the cost and size may not justify the purchase. In such cases, a lower-rated or simpler disconnect switch could be a more practical choice. Additionally, users must ensure they understand the switch s limitations particularly the difference between continuous and surge ratings to avoid misuse.

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- You have a **high-power system** (e.g., solar arrays, electric vehicles, or industrial loads) requiring a robust disconnect.

- You need **reliable, manual isolation** for safety during maintenance.

- Your budget allows for a **premium, long-lasting solution** with a strong brand reputation.

- Your setup involves **frequent high-surge loads** (e.g., motors, inverters) that could benefit from the 750A rating.

- Your system s power demands are **well below 250A**, making a lower-rated switch more cost-effective.

- You require **automatic or remote-controlled disconnects** (a separate relay would be needed).

- Space is **limited**, and the switch s size would be impractical.

- You re working on a **tight budget** and can find a similarly safe but lower-cost alternative.

For most **average off-grid, RV, or small solar setups**, a **100A 150A disconnect switch** might be sufficient. However, if your project involves **significant power or safety-critical applications**, the Duralast 20138 is a strong, well-engineered choice. Always pair it with proper wiring, circuit protection (like fuses or breakers), and follow local electrical codes.

Details:

Duralast Safety Switch Battery Disconnect DL 2013 8 - 250A Continuous/ 750 Surge. New in original package.

part #: 20138 price

• $19.99

specifications electricalmiscoz:

• brand: Duralast
• mpn: 20138
• type: Battery Disconnect Switch
• unit type: Unit
• connector style: Disconnect
• contact material: Copper
• material: Metal
• upc: 193460269657

general electricalmiscoz:

• Electrical Supplies > Electrical Wire Cable Accessories > Electrical Wire Cable Connectors
• condition: New

returns electricalmiscoz:

• policy: No Returns

offer electricalmiscoz:

• started: February 11, 2026
• options: Ship-to-home
• availability: In Stock
• sold: 0
• quantity: 1

seller electricalmiscoz:

• rating: 95.0%
• city: Brighton, Massachusetts
• # reviews: 1041

payments electricalmiscoz:

• credit card: Diners-club
• wallet: Google-pay
• other

shipping electricalmiscoz:

• class: Standard
• service: USPS Ground Advantage
• cost: $7.22
• carrier: USPS
• transit: 6-9 Days
• type: Calculated

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