Supplementary Protectors

Siemens' UL 1077 Supplementary Protectors are designed to provide additional protection along with a branch circuit protection device. Since our Supplementary protectors are made to trip faster than a standard UL 489 Circuit Breaker they are able to provide additional protection for more sensitive devices inside the panel. Supplementary protectors can used in a number of industrial applications such as to provide selectivity for multiple motor control circuits on the secondary side of a control transformer or power supply by allowing the user to quickly find the problem circuit should a fault occur with out having to shut down all of the other control circuits. Supplementary protectors may also be used as a local disconnecting means inside the panel when a branch circuit protection device is already present.

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Description - IEC Supplementary Protectors (UL-1077) 

Supplementary Protectors - Complete Information

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Description - 5SY4 - IEC Supplementary Protectors

5SY4- General Information

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5SY4- Technical Information

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5SY4- Trip Curve Characteristics

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5SY4- Single and Dual Pole up to 63A

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5SY4- Three and Four Pole up to 63A

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5SY4- Dimension Drawings

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5SY4- Accessories

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5SY4- Additional Components

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Description - 5SY5 - IEC Supplementary Protectors

5SY5- General Information

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5SY5- Technical Information

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5SY5- Trip Curve Characteristics

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5SY5- All Poles up to 63A

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5SY5- Dimension Drawings

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5SY5- Accessories

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5SY5- Additional Components

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Description - 5SP - IEC Supplementary Protectors

5SP-  General Information

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5SP- Technical Information

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5SP- Trip Curve Characteristics

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5SP- All Poles up to 63A

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5SP- Dimension Drawings

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5SP- Accessories

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5SP- Additional Components

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