Beijer Ref SN450/1-A4-WR2 electronic flow switch, G1/2, IP67
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Product Description
The SN450/1-A4-WR2 is a 230 V electronic flow switch with a G1/2 in process connection and a 48 mm insertion probe, rated 4 A and enclosed to IP67. It provides no-flow protection on liquid pipework where a paddle-type switch would be unsuitable. Applications include chilled-water circuits, cooling-tower lines, hydronic HVAC loops, and industrial process cooling.
Technical Specifications
- Product description
- Electronic, 230 V, G1/2" connection, 48 mm probe, 4 A, IP67
- Part number
- SN4501A4WR2
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Catalogue entry last verified: 2026-10-02.
Frequently asked questions
- Where can I buy SN4501A4WR2?
- SN4501A4WR2 can be ordered from cballast.com as a Beijer Ref catalogue item: request a quotation on this page or email sales@cballast.com, and the order ships worldwide.
- What is the manufacturer part number for this Beijer Ref product?
- The manufacturer part number is SN4501A4WR2.
- Who manufactures SN4501A4WR2?
- SN4501A4WR2 is a Beijer Ref product in the HVAC & Refrigeration range.
- What is the minimum order quantity for SN4501A4WR2?
- The minimum order quantity is 1.
- Is SN4501A4WR2 available?
- Yes — SN4501A4WR2 is available to order: fulfilment is from supplier stock in cBallast's European network, dispatched directly from the warehouse to the customer, with the exact lead time stated in the quotation (reply within 24 hours).
- How do I get a price for SN4501A4WR2?
- Request a quotation with the quote button on this page or by email to sales@cballast.com — we reply within 24 hours with price, availability and lead time.