Is Z728 discontinued?
Z728 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.
PEPPERL+FUCHS
Z728
Pepperl + Fuchs Z728 Zener Barrier
PEPPERL+FUCHS
From $157.84In stockSource updated 6/24/2026
Product Description
Pepperl + Fuchs Z728 Zener Barrier P/N: 71788 1-Channel Working Voltage 26.5V at 10 µA Series Resistance max. 327 Ω Fuse Rating 50 mA DIN rail mountable The Zener Barrier prevents the transfer of unacceptably high energy from the safe area into the hazardous area. The Zener diodes in the Zener Barrier are connected in the reverse direction. The breakdown voltage of the diodes is not exceeded in normal operation. If this voltage is exceeded, due to a fault in the safe area, the diodes start to conduct, causing the fuse to blow. The Zener Barrier has a positive polarity, i. e. the anodes of the zener diodes are grounded.
Buy Options
Condition, indicative price, stock, and lead time. Confirm current availability via RFQ.
ConditionPriceAvailabilityLead time
Used
Price: $157.84
Availability: Available to order
Lead time: Quoted after RFQ
Specifications
- P/N
- 71788
- Brand
- Pepperl + Fuchs
- Part Number
- Z728
- Product
- Zener Barrier
- Model
- 1-Channel
- Type
- Fuse Rating 50 mA
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.
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Prices and stock can change. Submit quantity, required condition, and destination for a current quote.
FAQ
How do I buy Z728?
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 Z728?
We list Used for Z728 (indicative availability and pricing — confirm on RFQ). See our condition policy at https://www.usedautomations.com/condition-codes.