SKU: 52334199281

PENTAIR MAX E THERM HIGH LIMIT SWITCH - 42001-0063S

Sale price$49.55 Regular price$55.05
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Ships within 48 hours · Estimated delivery Sep 25 - Sep 30

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Description

PENTAIR MAX E THERM HIGH LIMIT SWITCH - 42001-0063SThe Pentair Max E Therm High Limit Switch (42001 0063S) is an essential safety component that pool service professionals rely on to protect heater systems from dangerous overheating conditions. This critical safety device automatically shuts down the system at 135F, preventing costly equipment damage and ensuring customer safety in residential pool and spa installations. Professional Service Benefits Pool service contractors depend on this non

The Pentair Max-E-Therm High Limit Switch (42001-0063S) is an essential safety component that pool service professionals rely on to protect heater systems from dangerous overheating conditions. This critical safety device automatically shuts down the system at 135°F, preventing costly equipment damage and ensuring customer safety in residential pool and spa installations.

Professional Service Benefits

Pool service contractors depend on this non-resettable switch to maintain system integrity and reduce emergency service calls. The clear HLS LED indicator on MasterTemp heaters makes diagnosis quick and efficient, reducing troubleshooting time on service calls. Compatible with both Max-E-Therm and MasterTemp systems, this switch ensures your technicians can service a wide range of installations with confidence.

Why Pool Contractors Choose MT Pools

MT Pools understands that heater repairs can't wait. Our superior customer service ensures you get the right parts fast, keeping your service operations running smoothly. With our B2B wholesale pricing and reliable inventory, you maintain healthy profit margins while providing exceptional service to your customers.

Frequently Asked Questions

How do I know when the high limit switch needs replacement?

On MasterTemp heaters, the "HLS" LED indicator will light up when the high limit switch has activated and needs replacement. The switch is non-resettable once triggered.

Is this switch compatible with both Max-E-Therm and MasterTemp heaters?

Yes, the 42001-0063S high limit switch is designed for both Pentair Max-E-Therm and MasterTemp heater electrical systems, making it versatile for service contractors.

What temperature triggers the high limit switch?

The high limit switch activates at approximately 135°F (57.2°C) to prevent dangerous overheating and protect the heater system from damage.

Does MT Pools offer technical support for installation?

Yes, MT Pools provides expert technical guidance to pool contractors, along with access to Pentair installation guides and wiring diagrams for proper installation.

Order Today

Keep your service van stocked with this essential safety component. MT Pools' superior customer service and fast shipping ensure you're always ready for emergency heater repairs.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 52334199281

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M
Massapequa, US
★★★★★ 5
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Perfect Jean for my new postpartum bod! Was sad that none of my old jeans fit. I Was mourning them really-then I decided to just bite the bullet and buy some new jeans in my new size and these are them! They are relaxed enough for me to bend at the knees and not feel like I’m cutting off blood, but fitted enough that I don’t look like a slouch. I could technically have gone a size down and would have liked them but I appreciate some give in this phase of life. For reference I am 5’6 and 129 lbs and I got a 27
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Reviewed in the United States on September 9, 2025
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Leanna From Indiana
Waukegan, US
★★★★★ 5
So cute and well-made
Great pants made very well, I was hoping they’d be a little longer when I folded them back down at the ankle. But a little too short for me I’m 5’7” which is perfect for us spring and summer, but not going into winter where I live. If you were 5’6” they might be perfect for wearing rolled up or down. It’s a good quality material. They feel very durable in the style is right on!
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Reviewed in the United States on November 1, 2025
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Joseph Garces
Omaha, US
★★★★★ 5
Thick and soft.
What a steal. Thick, warm, soft and such high quality. This is an amazingly nice sweater.
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Reviewed in the United States on May 23, 2026
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kb
Carnegie, US
★★★★★ 5
Great for layering or wearing on its own!
I’m 5’6” and ordered the small — it fits perfectly! The color is exactly as shown in the pictures, a beautiful beige that goes with everything. The fabric is incredibly soft and comfortable, making it great for layering or wearing on its own. I’m really happy with this purchase and would definitely recommend it!
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Reviewed in the United States on November 1, 2025
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CC7
San Leandro, US
★★★★★ 3
Nice but not great
Fits true to size. I ordered a small and it was a great fit. Could be a bit softer. Loved the style. Not too thin or not heavy, nice weight. This quality of the sweater was nice, however the buttons broke apart as I was styling the cardigan. Not happy to have to sew on small buttons to fit the small holes. It’s nice but I had to put too much effort into wearing it.
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Reviewed in the United States on February 11, 2026

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