Home / Honeywell / Honeywell Fire Alarm Panels & Modules / 583371.21 Mains Switching Unit MSU

Available on request

Honeywell – 583371.21 Mains Switching Unit MSU

MPN: 583371.21 · Brand: Honeywell

Price on request

Discontinued by Honeywell — we can still source the original 583371.21 (new, used or refurbished, subject to availability). Request a quote below.

Request a Quote

12-month warranty (new) · 3-month (used/refurbished)

30-day returns, no restocking fee on unused parts

Ships via

Quick facts

Availability	Confirmed on request
Category	Honeywell Fire Alarm Panels & Modules
Lifecycle	Discontinued
Warranty	12-month (new) · 3-month (used/refurbished)

Shipping & availability

Can I still buy the 583371.21 now that it is discontinued?

Yes. Honeywell has discontinued the 583371.21, but sourcing discontinued parts is what PartnerPLC specialises in — new old stock, used and refurbished units. Request a quote and we'll confirm availability, condition and lead time.

When can 583371.21 be shipped?

583371.21 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up 583371.21 in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for 583371.21 and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for 583371.21, subject to availability and destination.

The power panel MSU is used to secure the power supply of all VARIODYN D1 components that are installed in a cabinet. In addition, it offers a connector for connecting a service PC for local/network-wide maintenance purposes.Each of up to three phases that will be charged max. 18 A. The overload switch automatically releases the current, but can also be used for manual switching of the power supply.The operating state is indicated by green indicator lights. The switch position can be evaluated via auxiliary contacts. A front-mounted 230 V mains connector and an RJ45 jack are provided for connecting a service PC.

Features & Benefits:

Approved as per EN 54-16

Three 18 A overload switch with control contacts and indicator light

For maintenance purposes IEC and Ethernet port for connecting a service PC

The three terminals for auxiliary change-over per overload switch

Up to four devices can be connected per overload switch

Plastic cover of the keys

Honeywell ESSER 583371.21 — Mains Switching Unit MSU. Discontinued by Honeywell — no longer in the current range. PartnerPLC sources new, surplus and discontinued Honeywell parts — request a quote for price, condition and lead time.