US&S Mag Stick relay position?

US&S Mag Stick relay position?

• A. Normal on left; Reverse on right
• B. Normal on left; Reverse on left
• C. Normal on right; Reverse on right
• D. Normal on right; Reverse on left

Answer: (D)

The Mag Stick relay uses two stable positions for its movable contact, called Normal and Reverse. The mechanism is spring-biased so that, when the coil is not energized, the stick settles to the right—the Normal position. Energizing the coil with the proper polarity pulls the stick to the left, producing the Reverse position. This means the normal state for the relay’s contact arrangement is on the right, while the reversed state is on the left. In practical terms, you can identify the position by noting whether the stick is to the right (Normal) or to the left (Reverse); this mapping is standard for US&S Mag Sticks and how the relay’s logic is interpreted in interlocking schemes.

The Mag Stick relay uses two stable positions for its movable contact, called Normal and Reverse. The mechanism is spring-biased so that, when the coil is not energized, the stick settles to the right—the Normal position. Energizing the coil with the proper polarity pulls the stick to the left, producing the Reverse position. This means the normal state for the relay’s contact arrangement is on the right, while the reversed state is on the left. In practical terms, you can identify the position by noting whether the stick is to the right (Normal) or to the left (Reverse); this mapping is standard for US&S Mag Sticks and how the relay’s logic is interpreted in interlocking schemes.