1. Product Identification
Model Number: CSC3-HU-W-B

Pronunciation: "C-S-C-Three-H-U-W-B" (letters pronounced individually)

Product Type: Circuit Breaker (Molded Case, High Performance)

Manufacturer: Schneider Electric (Compact NSX or Acti9 Series)

2. Key Technical Specifications
Parameter Specification
Rated Current 63A (Standard)
Pole Configuration 3P (3-Pole)
Breaking Capacity 36kA at 415V AC (IEC) / 65kA at 240V AC (UL)
Voltage Rating 690V AC (IEC) / 480V AC (UL)
Trip Unit Micrologic 2.3 (Thermal-Magnetic Protection)
Mounting Fixed or Plug-in (Dependent on Variant)
Operating Temp. -25°C to +60°C
Standards IEC 60947-2, UL 489
3. Functional Description
The CSC3-HU-W-B is a high-performance molded case circuit breaker designed for:
✅ Circuit Protection – Reliable overload & short-circuit protection.
✅ Flexible Installation – Supports fixed or drawout mounting.
✅ Advanced Monitoring – Optional communication modules (Modbus, Ethernet).
✅ Safety Compliance – Meets global electrical standards.

4. Decoding the Model Number
CSC3: Schneider’s Compact NSX series

HU: High breaking capacity (36kA+)

W: Standard trip unit (Micrologic)

B: 3P (3-Pole) configuration

5. Typical Applications
Industrial Power Distribution

Motor Control Centers (MCCs)

Commercial Buildings

Renewable Energy Systems

6. Compliance & Certifications
IEC 60947-2 (International)

UL 489 (North America)

CE Marked (EU Compliance)

RoHS Compliant

7. Ordering Information
Base Model: CSC3-HU-W-B (3P, 63A, Fixed)

Options:

-P: Plug-in version

-COM: Communication module slot

-E: Earth leakage protection

8. Documentation Reference
Datasheet: DOCA0055EN (Schneider Electric)

Installation Guide: NSX-IG-003