Sycom SYC-ST27B Surge Protector

Professional Voice and Data Line Surge Protection

The Sycom SYC-ST27B Surge Protector delivers reliable protection for telephone and data lines against damaging voltage surges. Featuring screw terminal connections and solid-state technology, this compact protector safeguards a wide array of communication equipment from power spikes entering through voice and data lines.

Why Choose the Sycom SYC-ST27B?

• Screw terminal connections – Secure, professional-grade connections for 24 to 12 AWG wire
• Single pair protection – Bi-directional protection for one telephone or data line pair
• Ultra-fast response time – Less than 5 nanoseconds for immediate surge suppression
• 20,000 amp surge rating – Total surge current capacity protects against severe power events
• Solid-state technology – Reliable, maintenance-free protection with no moving parts
• Auto-reset fuse – Automatically resets after surge events for continuous protection
• UL 497A/UL 497B certified – Meets rigorous safety and performance standards
• Central ground terminal – Simplified grounding for proper installation
• Compact design – 2" x 1.25" x 0.375" fits easily in tight spaces
• 9-ohm series resistance – Optimized for voice and data line protection (497A version)

Ideal For:

Telephone systems, modems, fax machines, DSL equipment, security systems, alarm panels, data communication equipment, and any devices connected to telephone or data lines requiring surge protection.

What It Protects:

• Business phone systems and PBX equipment
• Modems and DSL/broadband connections
• Fax machines
• Security and alarm systems
• Point-of-sale (POS) terminals
• Data communication equipment
• Any equipment connected to telephone or data lines

Key Features:

• Screw terminals for 24 to 12 AWG wire
• Single pair, bi-directional protection
• Response time: Less than 5 nanoseconds
• 20,000 amp total surge current rating
• Auto-reset fuse protection
• Solid-state technology
• UL 497A/UL 497B certified
• Central ground terminal
• Series resistance: 9 ohms (497A version)
• Compact size: 2" x 1.25" x 0.375"

Why Telephone and Data Line Protection Matters:

Voltage surges don't just come through power lines—they can also enter through telephone and data connections. Lightning strikes, power line contact, and utility switching can send damaging surges through phone and data lines, destroying expensive equipment. The Sycom SYC-ST27B provides a critical layer of protection that standard power surge protectors can't offer.

Professional Installation: The screw terminal design allows for secure, permanent connections using 24 to 12 AWG wire. Connect the protected line between your incoming telephone/data line and your equipment, and connect the central ground terminal to a proper earth ground for optimal protection.

Important Note: These units should not be used on signal lines capable of supplying more than 125 milliamps continuously (497A version). Ensure your application is compatible before installation.

Trusted Protection: Sycom has been a leader in surge protection technology for decades, providing reliable protection for critical communication equipment in commercial and industrial applications worldwide.

Caution:  These units should not be used on signal lines capable of supplying more than 125 milliamps continuously (497A Version)