Eaton CB1633B120480GR7 Pringle bolted pressure switch - UL
Part Number: CB1633B120480GR7
Quick Summary
Eaton CB1633B120480GR7 is a bolted pressure contact switch used to protect industrial power systems in switchgear and motor control centers. This device delivers reliable protection for three-pole, three-wire configurations in demanding environments, helping engineers avoid costly outages. UL-listed safety certification and broad enclosure compatibility (NEMA 1, 3R, 4, 12) support regulatory compliance across diverse sites. The CB1633B120480GR7 combines high current capability with a capacitor trip device, enabling precise, fast disconnection. In practice, its SPVR feature and fusible protections reduce downtime, while scalable options simplify procurement and enhance overall control reliability for power distribution. This makes it a robust choice for power distribution, motor protection, and critical process lines.
Product Information
Extended Description
CB1633B120480GR7 Eaton: Eaton pringle bolted pressure contact switch,Single-phase relay with capacitor trip device (SPVR),1600A,2NO-2NC,120V,Bottom feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB1633B120480GR7
UPC
782116958511
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 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
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
480 V
Voltage - max
480 V
Voltage rating
480 V
Special features
Single-phase 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 - CB1633B120480GR7
Feature: High amperage and 3-pole 2NO-2NC configuration; Business Impact: Enables safe and coordinated protection for large-motor and heavy-load circuits, reducing the risk of cascading faults; Application: Large industrial motors and distribution panels. Feature: Single-phase voltage relay with capacitor trip device (SPVR); Business Impact: Improves trip speed and selectivity, lowering arc-flash exposure and minimizing nuisance trips; Application: Critical switchgear protection in 480 V systems. Feature: Ground fault with control power transformer; Business Impact: Enhanced fault detection and reliable ground fault protection, improving safety margins and downtime recovery; Application: Plant-wide protection schemes. Feature: Bottom feed and fusible configuration; Business Impact: Simplifies installation in restricted spaces and supports orderly wiring, reducing retrofit complexity; Application: Compact switchgear retrofits in crowded control rooms. Feature: NEMA-rated enclosure compatibility and UL Listed certification; Business Impact: Streamlines regulatory compliance and site acceptance across diverse environments; Application: Industrial facilities requiring formal certification. Feature: Optional accessories (Ground Fault Relay, Blown Fuse Detection, Auxiliary Contacts); Business Impact: Extends monitoring capabilities and control coordination, lowering total cost of ownership; Application: Advanced protection schemes in process industries.
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FAQs
Yes. The CB1633B120480GR7 is designed for three-pole, three-wire configurations and bottom-feed installation, making it suitable for common Eaton switchgear and many compatible low‑voltage protection panels. Ensure proper mounting, wiring to 2NO‑2NC contacts, and alignment with enclosure ratings (NEMA 1, 3R, 4, 12) for compliant integration.
Key ratings include 1600A amperage, 480V system voltage, and 120V control voltage with a capacitor trip device (SPVR). The SPVR provides a controlled capacitor-assisted trip sequence, improving protection coordination and reducing nuisance trips while delivering a faster, more reliable fault clearance in single-phase contingencies.
Ideal for heavy‑duty motor control centers, process industries, and power distribution networks requiring high‑current protection with dependable ground fault detection. Its three‑pole, 2NO‑2NC configuration, fusible protection, and bottom‑feed design suit environments with space constraints and stringent safety standards.
The CB1633B120480GR7 is UL Listed, confirming safety compliance for industrial electrical protection devices. Its NEMA enclosure compatibility (1, 3R, 4, 12) supports installation across varied environmental conditions and aligns with common industry standards for switchgear and power distribution equipment.
Warranty follows Eaton’s policy (one year from installation or 18 months from shipment). For ROI, consider reduced downtime from accurate fault tripping, compatibility with optional accessories (ground fault relay, auxiliary contacts), and longer asset life from reliable protection. Regular inspection of contacts, housing integrity, and SPVR function is recommended.