
3900DS Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $7.99 | Condition is New, Markel 3900DS 120 277 20 amp Line Voltage Baseboard disconnect switch white NEW, shipping cost = $14.10 | 99.7% |
![]() | $35.67 | Top Pick! Condition is New, Standard Ignition Parking Brake Switch for Ford DS-3402, FREE SHIPPING | 99.7% |
![]() | $127.52 | Condition is New, 3900DS White Disconnect Switch DPST, FREE SHIPPING | 99.7% |

The 3900DS Disconnect Switch for hydronic architectural electric baseboard heaters is a crucial safety component designed to provide easy and secure control over your heating system. This switch is engineered to work specifically with hydronic baseboard heating systems, ensuring efficient and reliable operation.
The 3900DS switch is a two-position disconnect switch, meaning it can be switched between the "On" and "Off" positions. This feature allows for the complete disconnection of power to the baseboard heater when not in use, providing an added level of safety and energy efficiency.
The switch is constructed from high-quality materials, featuring a durable, corrosion-resistant brass body and a clear, impact-resistant cover. The cover is designed to protect the switch from accidental impacts or splashes, making it ideal for use in both residential and commercial settings.
The 3900DS switch is designed to be easily installed, with clear and concise instructions provided for both wiring and mounting. It is compatible with a wide range of baseboard heating systems, making it a versatile solution for various heating applications.
The switch also features a conveniently located lever handle, which can be easily operated with one hand. This design makes it simple to turn the switch on or off, even when wearing gloves or working in tight spaces.
The 3900DS Disconnect Switch is UL listed, ensuring that it meets the highest standards of safety and quality. It is also ROHS compliant, meaning it contains no hazardous materials. With its robust construction, reliable performance, and easy installation, the 3900DS Disconnect Switch for hydronic architectural electric baseboard heaters is an essential addition to any heating system.
Buying a 3900DS disconnect switch for hydronic architectural electric baseboard heating systems can be a worthwhile investment for homeowners seeking greater control and safety over their heating system. Here are some pros and cons to consider before making a purchase.
Pros:1. Safety: A disconnect switch allows users to safely turn off the electricity to the baseboard heaters. This can be especially important during maintenance or repair work.
2. Convenience: With a disconnect switch, users can easily turn off the heaters during warmer months or when they're not in use. This can help reduce energy consumption and save on utility bills.
3. Compliance: In some areas, local building codes may require the installation of a disconnect switch for hydronic architectural electric baseboard heating systems.
4. Peace of mind: Having a disconnect switch can provide homeowners with peace of mind knowing that they have an additional layer of safety and control over their heating system.
Cons:1. Cost: The cost of a disconnect switch, such as the 3900DS, can be a significant investment. Homeowners should consider the long-term savings from energy efficiency and potential cost savings from avoiding costly repairs.
2. Installation: Installing a disconnect switch can be a complex process, requiring electrical knowledge and skills. It may be necessary to hire a professional electrician to ensure proper installation and safety.
3. Space requirements: The disconnect switch may require additional wall space, which could be a consideration for homeowners with limited space.
In conclusion, the decision to buy a 3900DS disconnect switch for hydronic architectural electric baseboard heating systems depends on the individual homeowner's needs and circumstances. The benefits of safety, convenience, compliance, and peace of mind may outweigh the costs and installation complexities for some homeowners. Ultimately, it's important to consider the long-term savings and potential cost savings before making a purchase. If you're unsure about the installation process or have any safety concerns, it's recommended to consult with a professional electrician.
Details:
Manufactured by tpi corporation: produced corporation, a trusted manufacturer of industrial and commercial electrical products, the heater reflects commitment to quality reliability associated with brand. Efficient air flow: with high air flow capacity, tpi units provides effective circulation, distributing heat evenly across the space for optimal comfort. Safety first - tpi products are ready for use with all certifications. Tpi 3900DS disconnect Switch for hydronic and architectural electric baseboard heater, dpst, white:: high-quality construction: made with premium materials; built to withstand the demands of industrial environments; offering excellent resistance wear; corrosion; mechanical stress.
specifications centrafurn:
- brand: Switch
- mpn: 3900ds
- operation mode: On-off
- current rating: 20 Amps
- operating voltage: 277 Volts
- contact type: Dpst
- international protection rating: Ip00
- connectivity protocol: X-10
- color: White
- unit count: 1 Count
- package dimensions: 9.06 X 4.37 X 3.54 Inches; 8 Ounces
- item length: 9.06
- item height: 3.54
- item width: 4.37
payments centrafurn:
- other
- wallet: apple-pay
- credit card: diners-club
general centrafurn:
- category: Home & Garden > Heating, Air > Cooling Systems > Central Furnaces
offer centrafurn:
- sold #: 14
- availability: in stock
- in stock #: 3
- prices: $7.99–$127.52
- item condition: New
- options: ship-to-home
- started: september 6, 2025
returns centrafurn:
- policy: no returns
shipping centrafurn:
- type: fixed
- service: expedited
- class: expedited
- transit: 4-7 days
seller centrafurn:
- city: miami, florida
- # reviews: 75
- rating: 100.0%
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