Siemens TPS3A03050 Review

Read time: 3 minutes Last Updated: 12/03/2019

Siemens TPS3A03050

  • NEMA 4X polycarbonate enclosure is durable and able to withstand common wear
  • Solid state bi-directional operation allows for reliable 6k VPR
  • Very lightweight and compact allows for integrated installation
  • Can operate safely at between -25°C (-15°F) and 60°C (140°F)
  • Single alarm light isn’t exactly user-friendly
3.2 x 3.2 x 3.3 inches
1.55 lbs
Maximum Surge Current Capacity (MSCC):
50,000 amps
Enclosure Type:
NEMA 4X polycarbonate
Alarm or Indicator Light:
Yes 2-year
Our Review

From the outside, the Siemens TPS3A03050’s squared-off exterior might betray the belief that it is a weak substitute for a true whole home surge protector. But that preconception couldn’t be further from the truth because this model includes many components and specifications that enable it to protect a home against up to 50,000 amps of surge electricity. For example, this model’s solid state bi-directional operation allows it to repeatedly facilitate 1 nanosecond response times to bursts of as much as 5,000 volts.

The aforementioned square-shaped enclosure deserves a second mention, as well. That’s because this model’s case is made from a unique NEMA 4X polycarbonate material that is both durable and lightweight. Accordingly, this model can be mounted in several different orientations, including in a line side and load side application. This high-quality enclosure also possesses the added bonus of allowing this unit to operate safely between -25°C (-15°F) and 60°C (140°F).

Read more about our how our ratings broke down for the TPS3A03050 below or checkout how it compares to other whole surge protectors.

Key Specification Ratings

Maximum Continuous Operating Voltage (MCOV) – 8/10

Why Did It Earn this Score? – For such a compact unit, prospective users of the Siemens TPS3A03050 may be surprised to learn that this model’s MCOVs range from as low as 150 volts to as high as 690 volts (depending on the mode of protection used). While the low end of this range is fairly in line with surge protectors in this model’s class, the high end of this range certainly exceeds the capabilities of some models that cost twice as much. Accordingly, savvy users may be able to fully optimize their home’s surge protection potential by experimenting with the Siemens TPS3A03050.

Voltage Protective Rating (VPR) – 7/10

Why Did It Earn this Score? – The Siemens TPS3A03050 makes it a little difficult for the untrained DIYer to fully understand its VPRs. In its user’s manual, Siemens details that the TPS3A03050 has several VPR ranges based upon the current mode of protection. When in L-N or L-G mode, the Siemens TPS3A03050 provides a VPR between 600 volts and 2,500 volts. Meanwhile, this model’s L-L provides a heightened VPR range between 1,000 volts and 3,000 volts. While these specs are undeniably higher than those of its competitors, some new users may need to experiment before they find the right settings for their home’s electric system.

Mode of Protection – 7.5/10

Why Did It Earn this Score? – Unlike some of its prime competitors, the Siemens TPS3A03050 comes up short and only provides three of the primary modes of protection – L-N, L-G, and L-L. Accordingly, this model may not serve the needs of experienced surge protector users who want to fully customize their use of the device. Even so, most regular homeowners will find that these three modes will more than service their needs when it comes to protecting their home’s essential electronics.

The Final Verdict

After analyzing this model thoroughly, we can fully recommend the Siemens TPS3A03050 for use in your small to mid-sized home. This model is durable beyond compare and manages to retain a wide assortment of productive, resilient components without causing the unit to become bulk and cumbersome. Though its single alarm light can be a bit hard to interpret, you can be certain that this surge protector will perform its task beyond expectations when 50,000 volts of surge electricity threaten your home.