Eaton STS368NW3-1C00 Shunt Trip Safety Switch - NEMA 4X

Part Number: STS368NW3-1C00
Manufacturer
Eaton
Part number
STS368NW3-1C00

Quick Summary

Eaton shunt trip safety switch provides fast, reliable overcurrent protection for motor control centers and switchgear. This device enables automatic interruption of a circuit when an abnormal condition is detected, reducing the risk of equipment damage and personal injury. Engineers often wrestle with nuisance trips, coordination with relays, and difficult maintenance in demanding environments; a robust shunt-trip solution helps streamline trips and extend service life. With UL Listed and cUL Certified compliance and a rugged NEMA 4X enclosure, it performs in wet or dusty installations. In addition to high current handling, the 1200 A rating and 600 VAC/250 VDC capabilities support scalable, safer power distribution in modern facilities.

Product Information

Extended Description

STS368NW3-1C00 Eaton: Eaton shunt trip safety switch, with AFGF relay, 1200 A, Three-pole, 600 Vac, 250 Vdc, Alarm switch, 120 Vac, NEMA 4X, Fusible, 600 V
Product Name
Eaton shunt trip safety switch
Catalog Number
STS368NW3-1C00
UPC
786689369750
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 480V CPT, AER/GF Relay & Sensors
Auxiliary contacts
Alarm switch
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
Feature: High amperage rating of 1200 A enables protection for demanding loads and large motors. Business impact: Reduces fault-related downtime and equipment damage, supporting faster recovery in industrial facilities. Application: Suitable for motor control centers and high-current feeders where reliable interruption is critical. Feature: Three-pole design ensures simultaneous switching of all poles, minimizing arcing and ensuring coordinated shutdown. Business impact: Improves safety and lifecycle performance of switchgear while simplifying relay coordination. Application: Ideal for three-phase power distributions in industrial plants. Feature: Shunt trip with 120 VAC coil voltage and AFGF relay, plus an alarm switch, provides remote trip signaling and enhanced visibility. Business impact: Enables remote protection schemes and immediate fault notification, reducing mean time to repair. Application: Control panels and MCCs with centralized trip logic. Feature: NEMA 4X enclosure delivers robust ingress protection against dust, water, and harsh cleaning environments. Business impact: Extends service life in wash-down or outdoor settings, lowering maintenance costs. Application: Food & beverage, chemical processing, and outdoor installations. Feature: Fusible protection with a 600 VAC and 250 VDC rating supports versatile downstream protection. Business impact: Improves selectivity and fault isolation, enabling safer, more economical power distribution. Application: Industrial power distribution where both AC and DC protection are required. Feature: Includes 480V CPT, AER/GF Relay & Sensors per catalog notes, enabling ready installation with compatible upstream devices. Business impact: Reduces integration time and commissioning risk, accelerating project timelines. Application: Retrofit projects and new builds requiring ready-to-wire accessory packages.

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FAQs

Install as a three-pole shunt-trip unit with a 120 VAC coil and compatible upstream protections. Use in a NEMA 4X enclosure for wet or dusty environments. Ensure wiring and control circuitry accommodate 600 VAC loads and 1200 A ratings, with the alarm switch wired for remote trip signaling.
Amperage rating is 1200 A; voltage rating is 600 VAC and 250 VDC. Coil voltage is 120 VAC. The device includes a fusible protection scheme and an AFGF relay with an alarm contact for signaling.
Yes. The unit is UL Listed and cUL Certified, and it uses a rugged NEMA 4X enclosure to withstand demanding industrial environments, supporting reliable protection in harsh conditions.
Ideal for motor control centers, switchgear, and large industrial feeders that require high-current protection and rapid interrupt capability. It supports both AC and DC protection schemes and is compatible with standard MCC architectures and remote signaling via the alarm switch.
The combination of a three-pole design, shunt-trip with a dedicated relay (AFGF), and an alarm contact reduces nuisance trips and simplifies fault diagnostics. The NEMA 4X enclosure protects against dust and moisture, lowering maintenance frequency and extending service life in demanding environments.