MB4 ( Phụ kiện chân đế của những TB V25, V20, V10

• Suitable for V25-B+C, V20-C and V10-C
• Pre-mounted and ready for connection
• For TN systems
• Multifunction terminals for easy circuit of series-mounted devices
• Upper parts can be rotated through 180 degrees
https://obo-bettermann.com/article/display/en-wo/multibase-base.html