Eaton CB1633B120240G Pringle bolted pressure contact switch - UL 977
Part Number: CB1633B120240G
Quick Summary
Eaton CB1633B120240G is a pringle bolted pressure contact switch for heavy-duty motor-control in industrial power systems. Facilities struggle with unreliable trip performance and fuse coordination, leading to unexpected downtime. UL 977 certification and compatibility with NEMA 1, 3R, 4, and 12 enclosures help ensure safe, durable operation in harsh environments. The device's bottom-feed fuse configuration simplifies installation in existing panels while delivering ground fault protection with a control transformer. Designed for CBC switchgear and low-voltage switching devices, it supports reliable protection with straightforward maintenance. This combination translates to lower maintenance costs and improved system uptime, backed by Eaton’s documentation and support network.
Product Information
Extended Description
CB1633B120240G Eaton: Eaton pringle bolted pressure contact switch,BFD with no lights (trips switch) fusible,1600A,120V,Bottom feed,Ground fault,480 Vac,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB1633B120240G
UPC
786685618067
Product Length/Depth
16 in
Product Height
32 in
Product Width
24 in
Product Weight
200 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
1600A
Control voltage
120 V
NEMA rating
NEMA 1, NEMA 3R, NEMA 4, NEMA 12
Protection
Fusible
System voltage
120 V
Voltage - max
480 Vac
Voltage rating
240V
Special features
BFD with no lights (trips switch) fusible
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 - CB1633B120240G
Feature: 1600A amperage rating with fusible protection and three-pole, three-wire configuration. Business Impact: Handles high fault currents and provides robust protection, reducing upstream coordination issues and improving uptime in heavy-load applications. Application: Suitable for switchgear and motor-control centers where large transient loads are common. Feature: 120 V control voltage with a 240 V system rating and 480 Vac maximum voltage. Business Impact: Enables flexible control schemes and compatibility with common industrial power architectures, limiting the need for additional transformers. Application: Ideal for low-voltage control panels and distributed control systems.Feature: NEMA ratings of 1, 3R, 4, and 12. Business Impact: Extends enclosure compatibility across indoor and outdoor environments, lowering OEM customization and spare-parts costs. Application: Fits diverse facilities, from dry industrial plants to wet or corrosive environments.Feature: Bottom feed fuse configuration and ground fault with control transformer. Business Impact: Simplifies wiring, reduces install time, and enhances protection accuracy, minimizing nuisance trips during maintenance windows. Application: Aligns with CBC panels and safety-focused control circuits.Feature: Three-pole, three-wire configuration with pringle bolted pressure contact design. Business Impact: Delivers reliable mechanical and electrical performance, improving trip-before-close behavior and long-term reliability. Application: Wide use in industrial power-distribution networks and control gear assemblies.Feature: Warranty and support policy. Business Impact: Provides clear ownership, faster issue resolution, and predictable total-cost-of-ownership. Application: Critical for long-term asset management and service planning.
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FAQs
CB1633B120240G is designed for bottom-feed, three-pole, three-wire configurations in CBC panels. Ensure correct panel cutout, adequate mounting clearance, and accessible service points. Verify enclosure compatibility (NEMA 1/3R/4/12) for the installation environment and follow Eaton’s installation guidelines and local electrical codes to ensure safe, reliable operation.
Key specs include a 1600A amperage rating, 120 V control voltage, system voltage of 120 V, maximum 480 Vac, 240 V nominal rating, bottom feed, fusible configuration, and UL 977 certification. The device is a three-pole, three-wire switch with ground fault protection powered by a control transformer, designed for robust protection in demanding environments.
Yes. The CB1633B120240G is designed for motor-control centers and switchgear that require high-current protection, bottom-feed fusible configuration, and reliable trip-before-close operation. Its 120 V control and 240 V system ratings align with common MCC architectures, while UL 977 certification and NEMA-rated enclosures support safe integration.
UL 977 covers switchgear and similar protective devices, signaling conformity with safety, performance, and reliability standards for fusible switchgear. For the CB1633B120240G, UL 977 ensures safe operation under specified fault conditions, proper coordination with upstream devices, and compatibility with the enclosure types listed (NEMA ratings), helping meet regulatory requirements and OEM expectations.
Eaton provides a warranty of one year from installation or eighteen months from shipment, whichever occurs first. This policy supports ongoing maintenance planning and asset management, with access to Eaton’s technical resources, catalogs, and datasheets to assist with installation, replacement parts, and system upgrades.