Eaton CB3033T120480K7 Bolted Pressure Switch - UL Listed
Part Number: CB3033T120480K7
Quick Summary
Eaton pringle bolted pressure contact switch delivers high-current protection for industrial control panels. This design addresses reliability and safety challenges in demanding environments where interlock functionality and single-phase protection are critical. UL Listed with robust NEMA compatibility (1, 3R, 4, 12) provides regulatory confidence for enclosure-based installations, while the top-feed, fusible configuration supports streamlined wiring. For OEMs and end users, this switch combines high amperage capability, clear fault detection, and scalable protection options to reduce downtime and improve lifecycle costs in power distribution and motor control applications.
Product Information
Extended Description
CB3033T120480K7 Eaton: Eaton pringle bolted pressure contact switch,Interlock,3000A,2NO-2NC,120V,Top feed,No ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB3033T120480K7
UPC
782116950959
Product Length/Depth
22.5 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
No ground fault
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
3000A
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
Interlock
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Specification Sheet - CB3033T120480K7
Feature: High-current capability up to 3000A and system voltage of 480V. Benefit: Enables reliable switching for large motors and feeders, reducing the need for paralleling or additional protective devices; Application: Motor control centers and large distribution panels. Feature: 2NO-2NC contact configuration with an interlock. Benefit: Flexible control logic and enhanced safety interlocking to prevent unsafe sequencing; Application: Complex control schemes in panelboards and MCCs. Feature: Top feed fuse configuration and top feed arrangement. Benefit: Simplified wiring, faster installation, easier maintenance, and reduced labor costs; Application: Industrial switchgear enclosures with tight footprint constraints. Feature: UL Listed with NEMA ratings (1, 3R, 4, 12). Benefit: Regulatory compliance and enclosure compatibility in harsh environments; Application: Harsh industrial settings and outdoors where reliability is critical. Feature: Optional Ground Fault Relay, Blown Fuse Detection, Single Phase Protection, and auxiliary provisions. Benefit: Proactive fault detection and enhanced protection, lowering unplanned downtime; Application: Critical process facilities and safety-focused installations. Feature: Large footprint and weight indicate rugged construction for long service life. Benefit: Improved mechanical robustness and reduced risk of nuisance trips; Application: Heavy-duty applications requiring durable switchgear components.
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FAQs
For installation, plan the footprint given the 22.5 in L, 28 in H, and 40 in W dimensions and the 390 lb weight. Use top-feed wiring with the three-wire, three-pole configuration (2 NO-2 NC contacts). Ensure enclosure rating matches the NEMA 1, 3R, 4, or 12 requirements and that the optional fault-detection modules are compatible with the control circuit voltage (120 V).
The CB3033T120480K7 is rated for 3000A with a 480V system and 120V control voltage, plus a charge-before-close mechanism. This combination supports reliable inrush handling, reduced risk of contact wear, and safer sequencing in motor start/stop cycles, which minimizes downtime and wear on upstream protective devices.
Optional features include Ground Fault Relay, Blown Fuse Detection, Single Phase Protection, Kirk Provisions, and Auxiliary Contact Provisions. These modules enable early fault detection, phase protection, and extended control capability, reducing nuisance trips and enabling faster fault diagnosis in complex power distribution schemes.
The CB3033T120480K7 is UL Listed and compatible with multiple NEMA enclosures: 1, 3R, 4, and 12. This combination supports regulatory compliance for diverse environments, including damp or outdoor-rated installations, while maintaining safe operation under heavy-duty loads.
The switch carries Eaton’s standard warranty policy 25-000, offering one year from installation or eighteen months from shipment, whichever occurs first. Comprehensive datasheets and the spec sheet are available to assist commissioning, alongside Eaton’s switching devices resources for ongoing support.