Products
| Manufacturer | Grundfos Holding A/S |
| Item number | ALR 20/A Ex |
| Country of Origin | Denmark |
| Lead Time | 2-3 DAYS |
| After-Sales Support | For after-sales support, please contact May. |
| HS Code / Commodity code | Please confirm the destination before shipping. |
Quotes are valid for 30 days from the day the quote is received unless stated otherwise at the time of quotation.
Yes,we offer one year warranty for all new products.
Yes. We worked with FEDEX/DHL/TNT/UPS/ allowing us to provide swift global delivery of parts to any corner of the world.
Normally 3-5 working days,some remote areas 5-7 days more.
System safety depends on using the specified leakage sensor, locating the relay outside the hazardous area and following cabinet, temperature, spacing and electrical ratings.
Grundfos states that ALR 20/A Ex may only be operated with the AL05 Ex leakage sensor. Confirm the complete sensor cable and installed detection point.
The ALR 20/A Ex relay is not explosion protected and must be installed outside the hazardous area in a control cabinet with minimum IP54 protection.
Record ALR 20/A Ex, AL05 Ex, relay ratings, sensor cable, terminal wiring and installed hazardous-zone boundary.
Confirm the relay is outside the hazardous area, ambient is no more than 40 °C, the cabinet is at least IP54 and 10 mm clearance is available.
Mount on TS 35, wire to the official diagram and test leakage detection, relay output and downstream alarm or shutdown logic.
Do not place the ALR 20/A Ex relay inside a hazardous area and do not connect an unapproved leakage sensor in place of AL05 Ex.
Replacement rule: A different sensor relay is not an automatic substitute for Grundfos ALR 20/A Ex because hazardous-area separation, sensor compatibility and contact ratings must be preserved.
Grundfos states that ALR 20/A Ex may only be operated with the AL05 Ex leakage sensor. Do not substitute another sensor without written engineering approval.
No. Grundfos states that the relay is not explosion protected and must be installed outside the hazardous area.
Use a cabinet with at least IP54 protection, keep ambient temperature at or below 40 °C, mount on TS 35 rail and maintain 10 mm clearance.
The manufacturer documentation lists 230 VAC at 50 to 60 Hz, 4 VA, and a relay contact maximum of 250 V, 100 VA or 5 A. Verify the unit label before wiring.
Ask for written confirmation of matching AL05 Ex compatibility, condition, quantity, warranty and the fixed 2-3 DAYS lead time.
Use the official Grundfos instructions and send relay and AL05 Ex photos, wiring diagram, cabinet rating, hazardous-zone arrangement, quantity, destination and required date.
A Russian customer urgently needed a replacement for a discontinued automation component. After reviewing the product label, technical parameters, and application details, our engineers recommended a compatible alternative and provided photos and test videos before shipment. The alternative performed well, enhancing the customer's confidence in our technical capabilities and leading to multiple repeat orders.
An Indian customer still had doubts after initial online communication with us, so they visited our company in person for a face-to-face meeting and product inspection. This visit increased the customer's trust and led to the successful placement of their first order. Over the next few years, we completed multiple orders and established a stable, long-term partnership.
A Venezuelan customer needed a specific automation component and compared products and services from several suppliers online. After nearly three weeks of careful consideration, our sincere communication, professional service, and reliable product quality won the customer's trust. After receiving the product and using it for several weeks without any problems, the customer gave us positive feedback and subsequently placed multiple orders.
Document-selected model references arranged as a deliberately mixed field.
Send ALR 20/A Ex and AL05 Ex labels, wiring and cabinet details, quantity, destination and required date for a clear reply.
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