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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 3BU4R is suitable for applications that require supplemental protection for control circuits and on the load side of branch circuit protectors.
The Noark B1H3B4 is suitable for branch circuit device protection.
The Noark B1H3B4R is suitable for branch circuit device protection.
The Noark B1N3C4 is suitable for branch circuit device protection.
The Noark B1N3C4R is suitable for branch circuit device protection.
The Altech 3CU4R is suitable for applications that require supplemental protection for control circuits and on the load side of branch circuit protectors.
The Noark B1H3C4 is suitable for branch circuit device protection.
The Noark B1H3C4R is suitable for branch circuit device protection.
The Altech 3CU4L is suitable for branch circuit device protection.
The Noark B1N3D4 is suitable for branch circuit device protection.
The Noark B1N3D4R is suitable for branch circuit device protection.
The Altech 3DU4L is suitable for branch circuit device protection.