The ServiceTrack ST120 Single-phase surge protection device is a Type 1 SPD certified to UL 1449 standards, capable of handling a maximum rated surge current of up to 120kA/phase; 60kA/mode. It is ideally suited for protecting distribution panels, branch panels, and critical electrical loads.

The device is equipped with an Enhanced Transient Filter (ETF) that effectively suppresses lightning surges and transient overvoltages generated on the power network, helping extend equipment lifespan and improve overall system reliability.

ServiceTrack ST120 provides reliable protection against transient overvoltages caused by direct lightning strikes on power lines as well as electrical disturbances from the utility grid.

This device is especially suitable for areas with high lightning density and severe surge conditions.

Key Features of the ServiceTrack ST120 Surge Protection Device:

• Certified to UL 1449 Type 1 standard.
• Maximum surge current (Imax): 120kA/phase; 60kA/mode
• Measured Limiting Voltage (MLV): 42V (L-N) @ 2kV, 67A
• Integrated Enhanced Transient Filter (ETF) for effective surge suppression
• Response Time: < 1 nanosecond
• Short-Circuit Current Rating (SCCR): 200kAIC

The ServiceTrack ST120 surge protection device is equipped with integrated Component Level Fusing (CLF), allowing direct installation into the electrical system without the need for a separate disconnect device, while still ensuring maximum safety for the electrical system during operation.

APPLICATIONS:

• Compliant with ANSI/IEEE C62.41 Categories C, B, and A.
• Suitable for protecting distribution panels, branch panels, and critical electrical loads.
• Effective against high-energy lightning surges and common “ring-wave” transients.
• Compact design allows installation inside electrical panels, minimizing conductor length and significantly reducing residual voltage.

TECHNICAL SPECIFICATIONS:

• Function: Surge protection and surge suppression.
• System configuration: 1 Phase, 2 wires + Ground.
• System voltage: 240VAC.
• Device type: Type 1 according to UL 1449.
• Connection: Parallel installation with the electrical system.
• Maximum Continuous Operating Voltage (MCOV): 320V (L-N; L-G; N-G).
• Maximum Rated Surge Current (Imax): 120kA/phase; 60kA/mode.
• Enhanced Transient Filter (ETF).
• Integrated Component Level Fusing (CLF).
• Protection Modes: All modes (L-N, L-G, N-G).
• Response Time: < 1 nanosecond.
• Measured Limiting Voltage (MLV): 42V (L-N) (A1 Ring Wave 2kV, 67A).
• Voltage Suppression Technology: Maintains a pure sine wave for the electrical system.
• EMI/RFI Noise Filtering: 1kHz @ 2dB; 10kHz @ 17dB; 100kHz @ 40dB; 1MHz @ 18dB; 10MHz @ 6dB; 100MHz @ 1dB; Maximum attenuation frequency 106kHz @ 41dB.
• Short Circuit Current Rating (SCCR): 200kAIC.
• Status indicator lights; Form C dry relay contacts for suppressor status; Audible alarm with silence button.
• Operating Environment: -40°C to 70°C; 5% to 95% non-condensing humidity.
• Enclosure: NEMA 4 (IP 56).
• Standards Compliance: UL 1449 5th Edition, Type 1 for Type 1 & Type 2 locations; UL 1283; ANSI/IEEE C62.41 & C62.45.