Eaton CB4033T120480GR7 Bolted pressure switch - UL
Part Number: CB4033T120480GR7
Quick Summary
Eaton pringle bolted pressure contact switch provides high-current protection for three-phase industrial power systems. A common challenge is nuisance trips and slow fault isolation that disrupt production and raise maintenance costs. UL Listed and compatible with NEMA 1, 3R, 4, 12 enclosures, this device supports safe, versatile installation in harsh environments. When paired with ground-fault options and capacitor trip features, it offers reliable protection with scalable control power for OEMs and service teams.
Product Information
Extended Description
CB4033T120480GR7 Eaton: Eaton pringle bolted pressure contact switch,Single-voltage relay with capacitor trip device (SPVR),4000A,2NO-2NC,120V,Top feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB4033T120480GR7
UPC
782116950027
Product Length/Depth
17 in
Product Height
28 in
Product Width
40 in
Product Weight
390 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
UL Listed
Catalog Notes
OPTIONAL Ground Fault Relay, Blown Fuse Detection, Single Phase Protection, Kirk Provisions, Auxiliary Contact Provisions, AVAILABLE.
Contact configuration
2 NO-2 NC
Feed type
Top
Fuse configuration
Top feed
Ground
Ground fault with control power transformer
Number Of Poles
Three-pole
Number of wires
3
Switch type
Electrical trip with charge-before-close mechanism
Type
Pringle bolted pressure contact switch
Amperage Rating
4000A
Control voltage
120 V
NEMA rating
NEMA 1, NEMA 3R, NEMA 4, NEMA 12
Protection
Fusible
System voltage
480 V
Voltage - max
480 V
Voltage rating
480 V
Special features
Single-voltage relay with capacitor trip device (SPVR)
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Specification Sheet - CB4033T120480GR7
Feature → High-current switching capability up to 4000A at 480V enables reliable protection for large motors and feeders, reducing downstream fusing needs and minimizing unplanned downtime. This translates to measurable uptime gains in heavy manufacturing and process industries. Application: ideal for motor control centers and power distribution panels that demand robust interrupt capability.Feature → SPVR (Single-Voltage Relay with Capacitor Trip Device) delivers precise timing and a controlled trip, limiting arc energy and shortening fault clearing time. Business impact: improved safety and reduced maintenance costs from fewer nuisance trips. Application: motor starters and capacitor-loaded systems where fast, reliable protection is critical.Feature → Top-feed fuse configuration and ground-fault options simplify wiring in crowded panels while increasing fault visibility. Business impact: easier installation, quicker diagnostic paths, and enhanced personnel safety. Application: compact switchgear installations and feeders in plant floors with space constraints.Feature → Broad enclosure compatibility with NEMA ratings (1, 3R, 4, 12) and UL Listed compliance provides confidence across indoor, damp, and outdoor environments. Business impact: regulatory compliance without redesign, lower risk of environmental damage, and streamlined asset management. Application: OEM equipment, service panels, and distributed controls in industrial settings.Feature → Optional auxiliary contacts, Kirk provisions, and ground-fault relay readiness enable seamless integration into existing control schemes and safer interlocks. Business impact: scalable automation, easier debugging, and stronger protection coordination across devices. Application: modernization projects and new line installations where future-proofing is valued.
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FAQs
CB4033T120480GR7 is designed for top-feed, three-pole installations in industrial panels. When integrating, confirm enclosure compatibility with NEMA ratings (1/3R/4/12), verify 480V system voltage with a 120V control circuit, and plan for optional ground-fault relay or auxiliary contacts. The 2NO-2NC configuration supports both normally open and normally closed circuits for safe interlocking in control schemes.
The switch provides a 4000A amperage rating, 480V system voltage, and 120V control voltage, with a fusible protection scheme. It offers a 2NO-2NC contact configuration and SPVR capability for controlled tripping. These ratings make it suitable for high-current applications such as motor feeders, with reliable isolation and clear fault signaling in demanding environments.
Yes. The CB4033T120480GR7 is UL Listed and designed to meet multiple NEMA ratings (1, 3R, 4, 12), enabling safe operation in indoor, damp, and some outdoor installations when properly housed. The top-feed configuration and fusible protection further support installation in challenging environments while maintaining safety and reliability.
This device carries UL Listed certification and is compatible with NEMA ratings 1, 3R, 4, and 12, ensuring broad regulatory acceptance for most industrial applications. Optional features such as ground-fault relays and auxiliary contacts help meet specific protection schemes and safety standards in plant networks and OEM equipment.
The CB4033T120480GR7 consolidates high-current protection, fault isolation, and optional safety features into a single, durable unit, reducing downtime and maintenance complexity. Its rugged enclosure compatibility and optional ground-fault/auxiliary provisions simplify upgrades and coordination with existing control systems, delivering lower lifecycle costs and faster return on investment.