What is the difference between the NSR251 key and the DSR251 key?

Issue:
Difference between the NSR251 panelboard key and the DSR251 panelboard key.

Product line:
Circuit breaker panelboards

Environment:
Products sold in North America

Resolution:
The NSR251(silver colored) key will open all standard NEMA 1 trim locks. The DSR251 (brass colored) key will open all standard NEMA 3R and NEMA 1 trim locks.

Released for: Schneider Electric USA