Eaton FAZ-Z50/3 supplementary protector - UL 1077
Part Number: FAZ-Z50/3
Quick Summary
FAZ-Z50/3 supplementary protector from Eaton delivers three-pole overcurrent protection for industrial panels. Too many nuisance trips or insufficient protection can cause downtime and risk damage to sensitive equipment. It carries CSA Std. C22.2 No.235, UL 1077, and IEC 60947-2 certifications, reinforcing global compliance and safety in demanding electrical environments. Designed for three-pole circuits with a 50 A rating and 15 kAIC breaking capacity, it also features a compact 3 in footprint and standard terminals for easy installation. With a very low instantaneous setting, it provides tighter protection for sensitive loads, delivering measurable reductions in fault-related downtime and service costs.
Product Information
Extended Description
FAZ-Z50/3 Eaton: Eaton FAZ supplementary protector,UL 1077 Industrial miniature circuit breaker - supplementary protector,50 A,15 kAIC,Three-pole,2-3X /n,Standard terminals,Z Curve
Product Name
Eaton FAZ supplementary protector
Catalog Number
FAZ-Z50/3
EAN
4015082789329
Product Length/Depth
3 in
Product Height
3 in
Product Width
3 in
Product Weight
1 lb
Warranty
1 year
Certifications
CSA Std. C22.2 No.235 UL 1077 IEC 60947-2
Catalog Notes
Very low instantaneous setting to provide tighter protection for loads more sensitive to overcurrents.
Number of poles
Three-pole
Terminals
Standard
Amperage Rating
50 A
Trip Type
2-3X /n
Feature: 50 A amperage rating with 15 kAIC breaking capacity ensures robust fault interruption. This translates to reduced fault currents reaching downstream equipment, cutting the risk of damage in three-phase motor circuits and control panels. Application: ideal for industrial automation panels, MCCs, and machine protection architectures where high fault current potential exists. Feature: Very low instantaneous setting creates tighter protection for loads sensitive to overcurrents. Business impact: fewer nuisance trips during startup or transient events, improving equipment availability. Application: control circuits, PLC I/O cabinets, and instrumentation panels in manufacturing lines. Feature: Three-pole design with standard terminals simplifies wiring and retrofit. Impact: faster installation, lower labor costs, and compatibility with existing feeders. Application: new build panels and panel retrofits where space and wiring efficiency matter. Feature: UL 1077, CSA, and IEC 60947-2 certifications provide regulatory confidence and market acceptance. Impact: simplifies compliance audits and reduces risk in regulated environments. Application: facilities and OEMs serving sectors such as automotive, food & beverage, and process industries. Feature: Compact 3 in x 3 in footprint and 1 lb weight support flexible installations in tight enclosures. Impact: enables denser panel layouts, lowers enclosure volume, and reduces shipping and inventory costs. Application: small control cabinets and panel boards where space is at a premium. Feature: 1-year warranty and Eaton support ecosystem. Impact: predictable maintenance costs and quick access to replacement parts, boosting total cost of ownership. Application: aftermarket service, field service teams, and procurement decision-making.
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FAQs
FAZ-Z50/3 is designed as a three-pole supplementary protector with standard terminals, making it straightforward to wire into typical industrial panels and control enclosures. Its compact 3 in footprint supports space-constrained installations, while the three-pole configuration aligns with most three-phase feeder layouts. For retrofit projects, ensure the panel mounting supports a three-pole device and that conductor sizes meet the 50 A rating. Field wiring can be completed using conventional lugs and standard terminal blocks, which minimizes modification work and downtime.
The FAZ-Z50/3 offers a 50 A amperage rating with a 15 kAIC breaking capacity, in a three-pole design with standard terminals. It complies with UL 1077, CSA Std. C22.2 No.235, and IEC 60947-2, ensuring broad regulatory acceptance. Physical specs include a 3 in length/depth, 3 in height, and a 1 lb weight. The trip type is 2-3X, and the device is intended for use in industrial protection schemes requiring tight overcurrent response on three-phase systems.
Yes. The FAZ-Z50/3 features a very low instantaneous setting, which tightens protection for loads particularly sensitive to overcurrents. This helps minimize nuisance trips during normal startup transients while maintaining strong fault interruption. It is well-suited for control circuits, PLC panels, and instrumentation cabinets where protecting delicate devices (sensors, drives, and controllers) is critical, without sacrificing reliability during abnormal surge events.
FAZ-Z50/3 carries CSA Std. C22.2 No.235, UL 1077, and IEC 60947-2 certifications, covering North American and international standards. These certifications support compliance during facility audits and OEM approvals, enabling entry into regulated industries such as automotive, process industries, and machinery manufacturing. The presence of multiple recognized standards helps streamline procurement and reduces the need for additional third-party testing for many projects.
The device’s compact design and standard terminals simplify installation and retrofit, reducing labor time and panel downtime. With a 1-year warranty and robust UL/CSA/IEC certifications, maintenance planning is more predictable and parts availability is enhanced through Eaton support. The tight protection reduces nuisance trips, lowering service interventions and potential equipment damage, which translates to improved uptime and a favorable total cost of ownership in spacecraft, manufacturing cells, or automation lines.