Eaton STS463UD3 Shunt Trip Safety Switch - UL Listed
Part Number: STS463UD3
Quick Summary
Eaton STS463UD3 shunt trip safety switch enables rapid emergency shutdown in industrial control panels. Operators and engineers often struggle with safe, coordinated protection actions across multi-pole systems during startups and fault events. UL Listed and cUL Certified construction, plus NEMA 12 / NEMA 3R enclosure ratings, help ensure reliability in harsh environments. With a 100 A rating, 120 VAC coil, and broad voltage flexibility (600 VAC, 250 VDC), this device supports safe, compliant electrical protection with minimal downtime and maintenance. Designed for installations in industrial automation and electrical protection & circuit control contexts, it delivers consistent safety performance across systems.
Product Information
Extended Description
STS463UD3 Eaton: Eaton shunt trip safety switch, 100 A, Four-pole, 600 Vac, 250 Vdc, 120 Vac, NEMA 12, NEMA 3R, Non-Fusible, 600 V
Product Name
Eaton shunt trip safety switch
Catalog Number
STS463UD3
UPC
786685830292
Product Length/Depth
11.51 in
Product Height
24.95 in
Product Width
19.22 in
Product Weight
45 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Certifications
cUL Certified UL Listed
Enclosure
NEMA 12, NEMA 3R
Number Of Poles
Four-pole
Type
Shunt trip safety switch
Amperage Rating
100A
Coil voltage
120 Vac
Protection
Non-Fusible
Voltage rating
600 Vac, 250 Vdc
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
Eaton Specification Sheet - STS463UD3
Feature: Four-pole, non-fusible design. This ensures complete isolation across all conductors, reducing arc flash exposure and enhancing personnel safety during fault events. Application: Suitable for main switchgear, MCCs, and panel boards in manufacturing facilities. Feature: 100 A amperage rating with 120 VAC coil. Impact: Enables reliable remote trip control for high-load circuits and safe integration with control logic. Application: Ideal for industrial control panels and feeders in automation lines. Feature: Broad voltage ratings of 600 VAC and 250 VDC. Impact: Supports diverse supply environments and equipment across process industries. Application: Compatible with multi-voltage systems and energy-intensive machines. Feature: NEMA 12 and NEMA 3R enclosure protection. Impact: Provides dust, moisture, and corrosion resistance for indoor/outdoor installations. Application: Panel enclosures in harsh or damp environments. Feature: UL Listed and cUL Certified with Eaton warranty. Impact: Ensures regulatory compliance and vendor reliability, reducing risk and lifecycle costs. Application: Audits, maintenance planning, and compliance reporting. Feature: Clear footprint and weight specifications (24.95 in height, 19.22 in width, 11.51 in depth, 45 lb). Impact: Facilitates precise panel layout and installation planning. Application: Integrates within standard control panels in industrial facilities to optimize space and reduce installation time.
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FAQs
Plan for a four-pole, non-fusible unit within a panel rated for NEMA 12 or NEMA 3R environments. Verify enclosure clearance and mounting dimensions (approximately 24.95 in height, 19.22 in width, 11.51 in depth) to ensure adequate service access. Use a 120 VAC control circuit for the remote trip coil and wire per UL/cUL guidelines.
The 100 A rating defines the maximum continuous current the switch can safely interrupt without overheating. In protection schemes, this enables reliable isolation of heavy loads while maintaining safe disconnects in fault conditions. Pair with non-fusible operation to simplify maintenance and ensure predictable trip performance in MCCs and main switchgear.
Yes. STS463UD3 is designed to integrate with Eaton protection ecosystems and standard control architectures. When upgrading or integrating with existing MCCs, verify catalog alignment (STS463UD3) and ensure wiring conforms to the 120 VAC coil control circuit, plus the device’s 600 VAC / 250 VDC voltage ratings for your system.
This unit is UL Listed and cUL Certified, signaling compliance with recognized safety standards for electrical equipment. These certifications help with regulatory audits, customer qualification, and insurance requirements, while supporting safer installation practices in industrial facilities.
The non-fusible design coupled with UL/cUL certification reduces fault repair time and simplifies routine maintenance. Higher reliability lowers downtime costs in critical processes, while NEMA-rated enclosures protect against environmental ingress, extending service life in challenging plant environments.