100A Double-Pole Miniature Transfer Switch for Home Backup Power

Introduction:
When the power goes out, a portable generator can be a lifeline—but connecting it safely is paramount. Our 100A Double-Pole Miniature Transfer Switch (MTS) is the professional, code-approved alternative to risky extension cords or improvised connections. Engineered specifically for residential use, this compact switch provides a dedicated, safe interface between your generator and your home’s main electrical panel. It allows you to manually select and power a set of pre-wired critical circuits (like lighting, refrigeration, and heating) while completely isolating the utility line, protecting your family, your home, and utility workers.

Key Features & Benefits:

1. Ultimate Safety Through Physical Interlock:

   • Feature: A robust mechanically interlocked “LINE-OFF-GEN” rotary switch ensures that the utility source and the generator source can never be connected simultaneously.

   • Benefit: Eliminates the lethal risk of backfeeding electricity into the grid, which is a major safety hazard and violates electrical codes (NEC/CE Code). Provides peace of mind and legal compliance.

2. Space-Saving, Miniature Design:

   • Feature: Engineered with a compact footprint to fit neatly beside or within a standard residential main service panel or load center.

   • Benefit: Saves valuable panel space, simplifies installation, and offers a clean, professional appearance without requiring a large separate enclosure.

3. Durable Construction for Home Use:

   • Feature: Features high-quality copper alloy contacts with silver plating for reliable conductivity and a long electrical life. The sturdy switching mechanism is built for repeated, dependable operation.

   • Benefit: Withstands the occasional but critical use demanded by power outages, ensuring it works flawlessly when you need it most.

4. Clear, Intuitive Operation:

   • Feature: A prominent, labeled rotary handle provides positive tactile feedback in three distinct positions. The “OFF” center position allows for complete de-energization of circuits for maintenance.

   • Benefit: Any household member can be safely instructed on its simple “Switch to GEN before starting generator” operation.

5. Simplified Installation & Circuit Management:

   • Feature: As a pre-wired branch circuit transfer switch, it connects to designated breakers in your main panel for specific circuits you choose (e.g., furnace, kitchen, sump pump).

   • Benefit: Provides a more flexible and cost-effective solution than a whole-house ATS. Your electrician can easily wire it to manage 6-10 essential circuits based on your generator’s capacity.

Technical Specifications:

Parameter	Specification
Type	Manual Transfer Switch (MTS), Double-Throw
Poles	2
Rated Current	100 Amperes
Voltage Rating	120/240V AC, 60Hz (or 230V AC, 50Hz)
Switching Mechanism	Mechanical Interlock, Rotary Handle
Position	LINE – OFF – GENERATOR
Wire Compatibility	Accepts #4 AWG to #1/0 AWG copper wire
Enclosure Material	High-Impact Thermoplastic (UL 94)
Mounting	Flush Mount to Panel / Enclosure
Standards & Listings	UL 1008 Listed for Transfer Switch Equipment (Critical for Compliance)
Operating Temperature	-40°C to +60°C

Ideal Residential Applications:

• Essential Circuit Backup: Powers a pre-selected set of critical circuits from a portable generator (typically 5kW to 12kW).

• Sub-Panel Integration: Ideal for installation on a dedicated emergency sub-panel fed from the main service.

• Retrofit & Upgrade Projects: The perfect solution for homeowners seeking to add safe, permanent generator connectivity to an existing electrical system.

Value Proposition:

• Safety First: The most important investment you can make when adding backup power. Protects lives and property.

• Convenience & Order: Eliminates the mess, trip hazards, and limitations of running multiple extension cords through windows/doors.

• Power Management: Allows you to prioritize and comfortably power your home’s most important loads from a single, safe connection point.

• Professional Result: Ensures your backup power system is installed to code, preserving home insurance validity and resale value.

Critical Installation Note:
This device must be installed by a licensed, qualified electrician in accordance with all applicable local and national electrical codes (NEC in the US, CE Code in Canada). Proper installation is required to ensure safety and performance.

What’s Included:

• 1 x Miniature 100A 2P Manual Transfer Switch

• Mounting screws

• Installation and wiring guide