Is 3UN21 discontinued?
3UN21 is commonly available as a spare part. Submit an RFQ for pricing and lead time.
Reference images are model-matched from marketplace sources and must be confirmed before purchase.
Siemens
3UN21
Siemens 3UN21 00 0AN7 Thermistor Tripping Unit
Siemens
From $97.71In stockSource updated 6/24/2026
Product Description
Siemens 3UN21 00-0AN7 Thermistor Tripping Unit 220-240V AC 50/60Hz IP20 Auto Reset Monostable 2 LEDS 1NO+1NC
Buy Options
Condition, indicative price, stock, and lead time. Confirm current availability via RFQ.
ConditionPriceAvailabilityLead time
New
Price: $97.71
Availability: Available to order
Lead time: Quoted after RFQ
Specifications
- Brand
- Siemens
- Series
- 3UN21 00-0AN7
- Product
- Thermistor Tripping Unit
- Part Number
- 50/60Hz
- Ingress Protection
- IP20
- Material
- Monostable
Before we quote this part
Actual photos when available
Nameplate, condition, and visible wear can be shared before quote when stock photos are not enough.
Test notes for used units
Power-on or function test status is stated when available, with clear condition grading.
Trackable global shipping
DHL, FedEx, UPS, or forwarder options can be quoted with packing photos and tracking details.
Clear DOA boundary
For tested units, quote terms can include 7-day DOA support unless otherwise stated.
Independent sourcing disclaimer
We are not an authorized distributor, reseller, or representative of Siemens, Mitsubishi, Omron, or other manufacturers listed on this site. All product names, trademarks, brands, and logos are the property of their respective owners. Products may be used, refurbished, surplus, or sourced from the secondary market unless otherwise stated.
Need 3UN21 availability?
Prices and stock can change. Submit quantity, required condition, and destination for a current quote.
FAQ
How do I buy 3UN21?
Submit a Request for Quote on this page with quantity, required condition, and ship-to country. We respond by email with pricing and delivery options.
What condition options are available for 3UN21?
We list New for 3UN21 (indicative availability and pricing — confirm on RFQ). See our condition policy at https://www.usedautomations.com/condition-codes.