Sinetamer RM-ST60 Parallel 380V – 480V Transient Voltage Surge Supressor

The SineTamer© RM series of units blends outstanding high-energy “impulse” suppression with excellent “ring-wave” transient protection with our Frequency Attenuation Network®. This durable device is intended for general purpose and sensitive/critical load applications. The RM-ST60 is typically installed at small service entrances up to 400 amps, distribution and sub-distribution panels. Compact size and non-metallic enclosure design also allow it to be installed directly inside electrical panels and individual equipment disconnects. The internal installation provides the absolute shortest possible lead length and optimum performance. This economical device has features that are not available in devices costing many times its price. Its compact size makes installation a breeze. Maintenance Free operation and 15 Year Unlimited Free Replacement Warranty provide peace of mind. Standard unit is Type 2 10kA UL Nominal Discharge Current; Optional Type 2 20kA IN is available.


  • Application


    Designed for use at ANSI/IEEE Categories C, B and A with susceptibility up to medium exposure levels. Designed to protect sensitive/critical loads fed from distribution panels, branch panels and/or individual equipment panels.

Technical Specification

Parallel connected, transient voltage surge suppressor device utilizing both high-energy
handling and sine-wave tracking circuitry for virtual elimination of impulse and ring wave
type transients. (actively tracking the AC sine wave)
High strength ABS Plastic, NEMA 4X (IP67) rated enclosure, with K option (GA001 gasket).
3/4” conduit fitting (internally threaded) and external mounting feet.
Connection Method
#10 stranded wire.
Circuit Design...
Parallel connected, internally fused, hybrid design incorporating all mode protection, and
utilizing our encapsulated design to provide improved durability.
...Circuit Design
All suppression circuits are
encapsulated in our exclusive compound to assure long component life and complete protection from the environment and/or vibration.
Protection Modes
L-N, L-L (Normal Mode), and L-G, N-G (Common Mode). (Seven discrete modes)
Input Power Frequency
50-60Hz constant
EMI/RFI Noise Attenuation
30dB Max. from 1kHz to 10MHz
Up to 3.5 uF Max
Circuit Diagnostics
Super Bright LED, 1 per phase, normally on
Temperature Rating
Up to 80°C
0-99% Non-condensing
Component Level Thermal and Board Level Current Fusing
kAIC Rating
200 kAIC when installed according to installation instructions
RM-STB = Type 2 20kA IN Type 1 available – contact factory for proper model number