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Honeywell – MS3103J1021/B MSxx03 Diamond Series 27 lb-in. Spring Return Direct Coupled Actuators
Discontinued by Honeywell — we can still source the original MS3103J1021/B (new, used or refurbished, subject to availability). Request a quote below.
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Quick facts
| Availability | Confirmed on request |
| Category | Honeywell HVAC Field Devices (valves, actuators, sensors) |
| Lifecycle | Discontinued |
| Warranty | 12-month (new) · 3-month (used/refurbished) |
Shipping & availability
Can I still buy the MS3103J1021/B now that it is discontinued?
Yes. Honeywell has discontinued the MS3103J1021/B, 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 MS3103J1021/B be shipped?
MS3103J1021/B 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 MS3103J1021/B 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 MS3103J1021/B 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 MS3103J1021/B, subject to availability and destination.
Honeywell has long been a leading name in actuators, and the Diamond Spring Return Actuator is the latest addition to the popular Honeywell lineup. You can count on the Diamond Actuator to support your product with reliable performance day in and day out. A simplified shaft adapter and integral conduit connector saves space and eliminates the need for additional tools or conduit connectors, and 360-degree conduit connectors swivel allowing for easy conduit installation at almost any needed angle. The combination of high quality, small size and competitive price makes the Diamond Actuator the perfect choice for high-volume, low-torque applications, including: rooftop units, economizers, compact control dampers and control valves. Features & Benefits:
Modulating, Universal, Sylk Communicating and Fire & Smoke models available
Easily accommodates most length, width and depth restrictions
27 lb-in (3 Nm) torque
24Vac / 24Vdc supply voltage
Low energy consumption
Self-centering shaft adapter (SCSA) cuts installation time
Fast 30s stroke test mode available
With and without self centering shaft adapter
With and without 360 degree conduit connectors
With and without auxiliary switches (2 x SPST, fixed at 10⁰ and 80⁰, 125Vac, 1A resistive load)Certifications:
UL60730
IEC 60730-1 and Part 2–14
UL1097 for Double Insulation
CE Certification Low Voltage Directive 2014/35/EU
CE EMC 2004/108/EC
Switch cables are UL certified only
Enclosure Ratings:
IP54, in horizontal and cable down positions, IP50 in cable up position.
NEMA 2
Flame Resistance UL94-5VA
UL2043, switch wiring dependent on conduit
installation
Honeywell MS3103J1021/B — Used within heating, ventilating, and airconditioning (HVAC) systems to drive a variety of quarter-turn, final control elements requiring spring return fail-safe operation. 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.
Specifications
Product
| Lifecycle | Discontinued by Honeywell |
Ordering codes
| Part numbers on this product page | MS3103J1021/B, MS3103J1021/U, MS3103J1022/B, MS3103J1022/U, MS3103J1023/B, MS3103J1023/U, MS3103J1024/B, MS3103J1024/U, MS3103J1221/B, MS3103J1221/U, MS3103J1222/B, MS3103J1222/U, MS3103J1223/B, MS3103J1223/U, MS3103J1224/B, MS3103J1224/U, MS3103K1023/B, MS3103K10241/B, MS7103A1021/U, MS7103A2021/B, MS7103A2021/U, MS7103A2024/U, MS7103A2024/X, MS7103A2221/U, MS7103A2224/U, MS7103A2224/X, MS7103K1022/B, MS7103K1022/U, MS7103K1023/B, MS7103K1023/U, MS7103K1024/B, MS7103K2021/B, MS7103K2022/U, MS7103K2024/B, MS7103K2222/U, MS7103K2223/B, MS7103K2224/U, MS7503A2021/U, MS7503A2023/U, MS7503A2221/U |
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