✔ In Stock (Can ship in 5-7 days)

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Industrial, 1-Phase ZS (IO) w. LED and Built-in Varistor
Direct copper bonding (DCB) technology
LED indication
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- Q: Can I save items for later?
A: Yes, you can save the items you wish to purchase later in the shopping cart. This way, when you are ready to proceed with the order, you can easily find them.
- Q: Do you support global shipping?
A: Yes, we support worldwide shipping. No matter where you are located, we will make every effort to deliver the products to your doorstep.
- Q: How to apply for an extended warranty on a product?
A: Applying for an extended warranty is simple. During the purchasing process, you can choose to extend the warranty period for eligible products. Just select the desired warranty period, and it will be added to your purchase.
Reviews
- J
JAMES FURSETH
Dec 30, 2025
CARLO Relay RM1A40D50They understood the goals completely.HelpfulUnhelpful - V
Vincent Johnson
May 05, 2025
CARLO Relay RM1A40D50You're on fire.HelpfulUnhelpful - R
Ralph Graham
Feb 20, 2024
CARLO Relay RM1A40D50Absolutely perfect for my needs!HelpfulUnhelpful - R
RICKY Verret
Jan 27, 2024
CARLO Relay RM1A40D50On line support was excellent, helped identify the correct part I needed. Best price and quick shipment.HelpfulUnhelpful - A
Anonymous user
Nov 25, 2022
CARLO Relay RM1A40D50All was ok! No problems whatsoever.HelpfulUnhelpful
CARLO Relay RM1A40D50
✔ In Stock (Can ship in 5-7 days)

Online Support 24/7
12 Months Warranty for New Products
30 Days Money Back Guarantee
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