Eaton STS368NW33-1C00 Shunt Trip Safety Switch - NEMA 4X
Part Number: STS368NW33-1C00
Quick Summary
Eaton shunt trip safety switch reliably disconnects power to protect industrial switchgear during fault conditions. When control wiring and protective relays aren’t perfectly coordinated, you risk unplanned downtime and safety incidents. UL Listed and cUL Certified, with a NEMA 4X enclosure, ensures compliance in harsh environments and demanding installations. Designed for three-pole protection with 120 Vac coil and 1200 A ratings, it integrates with 480 V CPT and GF relays, delivering flexible, code-compliant protection that reduces downtime. Engineers can rely on consistent trip performance across temperature ranges and supply variations, reducing calibration time during commissioning. The design also supports remote diagnostics with compatible relay options to simplify ongoing maintenance.
Product Information
Extended Description
STS368NW33-1C00 Eaton: Eaton shunt trip safety switch, with AFGF relay, 1200 A, Three-pole, 600 Vac, 250 Vdc, 120 Vac, 2NO-2NC, NEMA 4X, Fusible, 600 V
Product Name
Eaton shunt trip safety switch
Catalog Number
STS368NW33-1C00
UPC
786689369705
Product Length/Depth
23.15 in
Product Height
72.5 in
Product Width
47.23 in
Product Weight
405 lb
Certifications
UL Listed cUL Certified
Catalog Notes
Includes 2NO/2NC Aux Con, 480V CPT and GF Relay & Sensors
Enclosure
NEMA 4X
Number Of Poles
Three-pole
Type
Shunt trip safety switch w/ AFGF relay
Amperage Rating
1200A
Coil voltage
120 Vac
Protection
Fusible
Voltage rating
600 Vac, 250 Vdc
Contact configuration
2NO-2NC
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Eaton Specification Sheet - STS368NW33-1C00
Feature: 1200 A amperage rating with a three-pole configuration. Business impact: Delivers decisive fault disconnection for high-current feeders, reducing equipment damage and unplanned downtime in industrial protection devices. Application: Ideal for MCCs, large feeders, and main switchgear in manufacturing environments where reliability matters. Engineers can rely on consistent trip performance across temperature ranges and supply variations, reducing calibration time during commissioning. The design also supports remote diagnostics with compatible relay options to simplify ongoing maintenance. Feature: 120 Vac coil control and compatibility with 480 V CPT and GF Relay & Sensors. Business impact: Simplifies integration with existing PLCs and protective relays, speeding up commissioning and reducing control loop faults. Application: Works with standard control circuits in panel boards and remote starter assemblies. Compatibility with standard mounting footprints and clear wiring diagrams speeds integration with existing plant control panels. The device's 2NO-2NC auxiliary contacts facilitate safe interlock signaling and status feedback to PLCs. Feature: NEMA 4X enclosure and rugged construction. Business impact: Enables operation in wet, dusty, or washdown areas without enclosure upgrades, lowering installation costs. Application: Suitable for industrial plants, food and beverage lines, and outdoor installations. The rugged design delivers corrosion resistance and splash protection, reducing maintenance frequency and extending service life in demanding production environments. Feature: 2NO-2NC contact configuration plus auxiliary contacts included. Business impact: Provides signaling and interlocking options, improving safety interlocks and feedback to PLCs. Application: Facilitates status monitoring and control integration in safety circuits. The inclusion of auxiliary contacts supports programmable interlocks and remote signaling without additional parts. Feature: Includes 480V CPT and GF Relay & Sensors as catalog notes. Business impact: Reduces sourcing time and expands protective function capability, boosting time-to-value for upgrades. Application: Ready-to-install extension for comprehensive protection schemes in switchgear. This packaged option minimizes field wiring and accelerates project timelines by delivering tested, field-ready configurations. Feature: UL Listed and cUL Certified. Business impact: Demonstrates compliance with global electrical standards, easing procurement and regulatory audits. Application: Suitable for global factories and critical infrastructure projects.
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FAQs
Begin with the Eaton installation guide. Verify three-pole wiring, connect the 120 Vac coil to the control circuit, and ensure the 2NO/2NC auxiliary contacts are wired to the interlock or PLC correctly. Use the included Aux Con and consult catalog notes for 480 V CPT and GF Relay integration. Mount in a compatible NEMA 4X enclosure and verify clearance for serviceability.
The STS368NW33-1C00 provides a 1200 A amperage rating, three-pole configuration, and voltage ratings of 600 Vac and 250 Vdc, with a 120 Vac coil. It offers fusible protection, 2NO-2NC contact configuration, and a NEMA 4X enclosure, with UL Listed and cUL Certified compliance for reliability in industrial environments.
Yes. Its three-pole design, 120 Vac coil, 1200 A rating, and 600 Vac / 250 Vdc capability make it ideal for MCCs and large switchgear. The NEMA 4X enclosure provides durability in wet, dusty, or washdown environments, supporting reliable operation across harsh production settings.
The device is UL Listed and cUL Certified, signaling compliance with both U.S. and international electrical standards. This simplifies procurement, facilitates regulatory audits, and supports global deployments in plants and facilities that require proven, standards-aligned protective devices.
Leverage the included 2NO-2NC auxiliary contacts and catalog notes for 480 V CPT and GF Relay & Sensors to streamline wiring. Plan preventive maintenance using remote diagnostic capabilities, verify compatibility with existing PLCs, and maintain spare auxiliary components to minimize downtime during servicing.