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Shop our wide selection of UL 489 miniature circuit breakers and UL 1077 supplementary protectors in both AC and DC voltages. They are available in one-, two- and three-pole versions with an amperage range up to 63A and in B, C or D trip curve options to meet your applications needs. Difference between UL 489 vs. UL 1077
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The Altech 2CU40R is suitable for applications that require supplemental protection for control circuits and on the load side of branch circuit protectors.
The Altech 2DU40L is suitable for branch circuit device protection.
The Noark B1N2D40 is suitable for branch circuit device protection.
The Noark B1N2D40R is suitable for branch circuit device protection.
The Altech DC2DU40L is suitable for branch circuit device protection.
The Altech 2DU40R is suitable for applications that require supplemental protection for control circuits and on the load side of branch circuit protectors.
The Noark B1N3B40 is suitable for branch circuit device protection.
The Noark B1N3B40R is suitable for branch circuit device protection.
The Altech 3BU40R is suitable for applications that require supplemental protection for control circuits and on the load side of branch circuit protectors.
The Altech 3CU40L is suitable for branch circuit device protection.
The Noark B1N3C40 is suitable for branch circuit device protection.
The Noark B1N3C40R is suitable for branch circuit device protection.