Eaton CB4033B120240G Pressure Contact Switch - UL 977
Part Number: CB4033B120240G
Quick Summary
The Eaton pringle bolted pressure contact switch delivers reliable high-current switching for large motor drives and process lines. Many plants struggle with nuisance trips and slow response when protection devices aren’t rated for 4000 A or fail to coordinate with control power transformers. This unit carries UL 977 certification and aligns with rugged NEMA 1, 3R, 4, and 12 enclosures, providing dependable protection in challenging environments. For buyers, it offers robust performance in CBC switchgear assemblies while supporting efficient maintenance and straightforward installation, with compatibility for bottom-feed, fusible configurations and ground-fault coordination that reduce downtime and operational risk.
Product Information
Extended Description
CB4033B120240G Eaton: Eaton pringle bolted pressure contact switch,4000A,120V,Bottom feed,Ground fault,480 Vac,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB4033B120240G
UPC
786685618098
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 977
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 Vac
Voltage rating
240V
Used with
CBC
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Specification Sheet - CB4033B120240G
Feature: High current capability of 4000A enables direct switching of large loads without external soft starters. Benefit: Reduces system complexity and downtime, improving line uptime in heavy-duty conveyors and presses. Application: Industrial automation and packaging lines that demand fast, reliable trip and clear coordination with control transformers. Feature: Control voltage of 120V and system voltage of 480V support integrated control and power distribution without additional power supplies. Benefit: Streamlines control wiring and reduces panel space, lowering installation cost. Application: Main switchgear and motor control centers in manufacturing plants. Feature: Bottom feed fuse configuration and three-pole, three-wire design. Benefit: Simplifies wiring layouts and improves fault isolation, enhancing safety and serviceability. Application: CBC switchgear with bottom-fed architectures. Feature: Ground fault with control power transformer for enhanced protection. Benefit: Protects personnel and equipment from ground faults while ensuring reliable control circuit operation. Application: Power distribution networks with integrated sensing. Feature: Charge-before-close electrical trip mechanism. Benefit: Minimizes arcing duty and ensures safe, sequenced energization for critical loads. Application: Heavy machinery starting sequences and automation equipment. Feature: NEMA 1, 3R, 4, 12 ratings and UL 977 certification. Benefit: Compliance with industry standards and rugged enclosure compatibility, reducing regulatory risk. Application: Harsh indoor and outdoor switchgear environments. Feature: 4000A, 120V control, 480V system, fusible protection. Benefit: End-to-end protection aligned with IEC-style practices and OEM standards, supporting lifecycle reliability. Application: Large electrical distributions in process industries.
Get a Quick Quote for a Eaton CB4033B120240G
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton CB4033B120240G?
Enquire Now
FAQs
For proper installation, plan for a bottom-feed arrangement and three-pole, three-wire wiring with fusible protection. Ensure control power transformer integration is compatible with 120 V control voltage and verify UL 977 compliance. The unit weighs about 430 lb, so use appropriate lifting equipment and follow manufacturer torque recommendations to maintain enclosure integrity and safe clearances.
The 4000A amperage rating supports direct switching of large loads, reducing the need for external starters. Combined with a 480V system and 120V control voltage, it enables compact, integrated protection within switchgear. The three-pole, bottom-feed design helps with fault isolation and straightforward wiring, improving overall reliability for motors and heavy equipment.
Yes. It is UL 977 certified and rated for NEMA 1, 3R, 4, and 12 enclosures, which covers indoor, outdoor, and harsh environments. This combination ensures compliance with common electrical codes while supporting durable protection in varied plant conditions and reducing regulatory risk for installation projects.
The unit includes ground fault protection with a control power transformer and a charge-before-close mechanism, ensuring safe sequencing and reduced arcing during trips. This integration simplifies control wiring, enhances personnel safety, and supports reliable operation in systems requiring coordinated protection and monitoring of fault conditions.
Warranty coverage is one year from installation or eighteen months from shipment, whichever occurs first, underscoring the importance of timely commissioning. For lifecycle value, maintain a spare set of components, verify contact integrity during routine inspections, and follow Eaton’s recommended maintenance schedule to sustain performance in high-demand environments.