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A compact surge protective device (SPD), the Siemens TPS3A03050 Type 1 Split Phase surge arrester replacement for secondary surge or lighting arrestors is designed to connect and protect 120/240-Volt single or (split-phase) panels mounted either by chase nipple, bracket, or DIN RAIL. Having a Type 1 designation allows for flexible electrical system connection location (line or load side) as well as UL 96A compliance (at 20 kA In).

Low voltage surge and lightning arrestors became obsolete when UL 1449 3rd edition went into effect in 2009. They were replaced with Type 1 SPDs having an I-nominal (In) rating equal to 20 kA. The style and form factor of traditional 120/240 split phase system surge arrestors is best replaced using the TPS3A03050.

Surge Protective Devices

To effectively surge protect your appliances and other sensitive electronic equipment, you need to stop surges before they get into your home and also control surges generated inside your home. Damaging surges enter your home primarily through the main utility power source, coax and telephone services. When left unprotected, surges will permeate throughout the home damaging electronics and appliances.

What is a surge?

A surge, sometimes called a transient or a spike, is a brief burst of energy (voltage and current). The most damaging surges enter through your home's power, cable and telephone lines. However, the majority of surges originate within the home from the action of motor based appliances like dishwashers, refrigerators, garage door openers, etc.

How do surges affect my equipment?

Large surges can damage equipment by "burning up" the internal components of your sensitive electronic equipment and appliances. Moderate surges disrupt equipment operation and damage internal components. Lower energy surges degrade equipment, which is referred to in the industry as "electronic rust."