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- Molded Case /
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CND63B900H
CND63B900H

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IMAGES ARE FOR REFERENCE ONLY.
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CND63B900H Specifications
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CND63B900H, Siemens, SENTRON, type CND, 3P, 3PH, 900A, 600V, 100kA@480V, fuseless current limiting, 40ºC, Bolt-On, 100% rated, complete with non-interchangeable trip, LI - Long-Time and Instantaneous trip functions, Thermal Magnetic, molded case circuit breakers
| Manufacturer | Siemens | Subcategory | Molded Case |
| Family | SENTRON | Amperage | 900 |
| Voltage | 600 | Poles | 3 |
| Manufacturer | Siemens | ||
| Subcategory | Molded Case | ||
| Family | SENTRON | ||
| Amperage | 900 | ||
| Voltage | 600 | ||
| Poles | 3 |
Electrical.com is NOT an authorized distributor for Siemens and therefore the manufacturer’s warranty does not apply. This product does include an Electrical.com 2 year warranty.



The CND63B900H is a molded case circuit breaker from the Siemens Sentron Series, engineered for high-capacity protection in commercial and industrial electrical distribution systems. This ND-frame model features a 3-pole configuration with a continuous current rating of 900A and is rated for operation up to 600V AC. The CND63B900H is equipped with a thermal magnetic trip unit, providing both overload and instantaneous short-circuit protection. It offers a high interrupting capacity of 100kA@480V, ensuring robust performance in environments with elevated fault current potential. The breaker is designed for operation at a standard 40°C ambient temperature and is 100% rated for continuous duty, meeting UL 489 and IEC 60947-2 standards for global compliance.
The Sentron Series, including the CND63B900H, is recognized for its durable molded case construction, current-limiting breaking capacity, and suitability for demanding applications in switchboards, panelboards, and industrial control systems. This series supports both new installations and retrofits, making it a reliable choice for upgrading existing infrastructure or designing new projects that require high interrupting ratings and large frame sizes. The CND63B900H features bolt-on mounting for secure installation and includes line and load terminals for straightforward integration.
For projects requiring dependable overcurrent protection and high interrupting capacity, the CND63B900H offers a robust and proven solution. Purchase the CND63B900H at Electrical.com. You're trusted Siemens power distribution equipment, support and service