Eaton CB4033B120480GPAC bolted pressure switch - Fusible
Part Number: CB4033B120480GPAC
Quick Summary
The Eaton CB4033B120480GPAC is a bolted pressure switch used in protection panels to reliably interrupt power in three-pole, 480V systems. In control rooms and plant floors, wiring complexity and reliability concerns can slow commissioning and increase downtime. It carries UL Listed certification and is compatible with NEMA 1, 3R, 4, and 12 enclosures, supporting safe, code-compliant installations. The device combines a 120V control circuit with a 480V main and bottom-feed fusible protection, delivering straightforward wiring and dependable protection. This aligns with industrial automation needs for safer, more efficient switchgear and motor control centers, while offering 1-year warranty options and beneficial auxiliary provisions for scalable protection strategies.
Product Information
Extended Description
CB4033B120480GPAC Eaton: Eaton pringle bolted pressure contact switch,Single-phase relay with capacitor trip device (Taylor), BFD with three on lights (does not trip),4000A,120V,Bottom feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB4033B120480GPAC
UPC
782116950584
Product Length/Depth
22.5 in
Product Height
32 in
Product Width
40 in
Product Weight
430 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.
Feed type
Bottom
Fuse configuration
Bottom 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-phase voltage relay with capacitor trip device (Taylor), BFD with three normally on lights (does not trip)
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Eaton Specification Sheet - CB4033B120480GPAC
Feature → Business Impact → Application: Three-pole configuration supports full three-wire protection in 480V systems, reducing mis-wiring risk and improving protection coordination in switchgear and MCCs. This enables more reliable tripping sequences and easier selective protection in high-density panels, delivering measurable downtime reductions. Feature → Business Impact → Application: Bottom feed with fusible protection simplifies field wiring and maintenance, enabling quicker replacements and safer fault isolation in constrained enclosures. This is ideal for service panels and industrial plants where space is at a premium and uptime is critical. Feature → Business Impact → Application: Capacitor trip device (Taylor) and charge-before-close mechanism minimize nuisance trips and ensure controlled energization, improving motor start reliability and safety in manufacturing lines. Feature → Business Impact → Application: Optional Ground Fault Relay, auxiliary provisions, and Kirk provisions extend protection scope, supporting code-compliant installations and scalable monitoring across multi-panel layouts. Feature → Business Impact → Application: UL Listed certification and NEMA compatibility reinforce regulatory compliance and field acceptance, reducing validation time during audits and commissioning. Feature → Business Impact → Application: 4000A amperage rating and 480V system voltage deliver high-capacity protection for large motors and loads, improving fault tolerance and overall system reliability in industrial facilities.
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FAQs
Installers should follow the enclosure manufacturer’s guidelines, ensuring bottom-feed wiring aligns with the switch’s fusible configuration. Verify the 480V main and 120V control circuits are isolated during mounting, then connect the three poles and three wires per the electrical diagram. Use the auxiliary contact provisions only if required for signaling, and confirm UL Listed compliance after wiring is complete.
This device offers fusible protection with a capacitor trip device for reliable single-phase protection and a charge-before-close mechanism to prevent inrush faults. When paired with optional ground-fault relay and auxiliary provisions, it enhances fault detection and selective coordination for motors and drives in switchgear and MCCs.
Yes. The unit is rated at 480V system voltage with a three-pole, three-wire configuration and is designed for rugged industrial environments. Its NEMA compatibility (1, 3R, 4, 12) supports a wide range of enclosures, making it widely suitable for power distribution panels and MCCs.
The product is UL Listed, a key safety certification that supports compliance with widely adopted electrical codes. This, combined with its NEMA-rated compatibility, helps streamline regulatory approvals and reduces validation time during audits and commissioning in industrial facilities.
The bolted pressure contact design with a capacitor trip device minimizes false trips, reducing maintenance interventions. Bottom-feed/configuration simplifies field wiring and replacements, shortening downtime during maintenance windows. Over time, this translates to lower service costs and improved uptime for critical production lines.