Product Description

MCCB Door Mounted Rotary Operator – Siemens 3VA9257-0HA20

The Siemens 3VA9257-0HA20 is a door-mounted rotary operating mechanism designed for SENTRON 3VA15 MCCBs (400A–630A frame size). It enables safe and convenient operation of the circuit breaker from outside the electrical panel without opening the enclosure. The accessory is supplied with a black rotary handle and provides IP65 protection, making it suitable for industrial environments where dust and water protection are essential. It is widely used in MCCs, PCCs, switchboards, and power distribution panels.

🔹 Key Features

• Siemens SENTRON 3VA MCCB accessory
• Model: 3VA9257-0HA20
• Door-mounted rotary operator
• Suitable for 3VA15 MCCBs
• Compatible with 400A–630A frame size
• External MCCB operation through panel door
• Black rotary handle included
• IP65 degree of protection
• Enhanced operator safety
• Door interlock function support
• Robust industrial-grade construction
• Easy installation and maintenance
• Reliable switching operation
• Designed for low-voltage power distribution systems
• Long mechanical service life

🔹 Applications

• Motor Control Centers (MCC)
• Power Control Centers (PCC)
• Industrial Switchboards
• Electrical Distribution Panels
• Commercial Buildings
• Manufacturing Plants
• Infrastructure Projects
• Utility Power Distribution Systems
• Industrial Automation Panels
• OEM Panel Manufacturing

🔹 Benefits

• Safe operation without opening panel doors
• Improved operator protection
• Reduced risk of accidental contact with live parts
• Easy access to breaker controls
• Suitable for harsh industrial environments
• Enhanced panel aesthetics and functionality
• Reliable long-term mechanical performance
• Simplifies MCCB operation in distribution systems