2CDS272334R0165 ABB ST202M-B16 Supplementary Protector 16 A 2P B 15 kA UL1077

Why Choose the ABB ST202M-B16 Supplementary Protector?

The ABB ST202M-B16 is a compact two-pole miniature circuit breaker / supplementary protector designed to provide reliable overload and short-circuit protection for electrical equipment, control circuits and industrial automation systems. Part of the ABB System pro M compact ST200M series, this model combines a 16 A rated current, B tripping characteristic and UL 1077 supplementary protection classification.

The B characteristic provides thermal-magnetic protection for circuits with relatively low normal inrush currents. This makes the ST202M-B16 particularly suitable for control, resistive and similar equipment circuits where responsive overcurrent protection is required while maintaining dependable operation under normal load conditions.

With a 2-pole configuration, 16 A current rating and 15 kA interrupting rating, the ST202M-B16 provides compact supplementary protection for industrial machinery, automation equipment and electrical control panels. Its modular DIN-rail format supports straightforward integration into professional equipment assemblies requiring UL 1077 supplementary protection.

Key Advantages

• 16 A supplementary protector for dependable equipment overcurrent protection.
• 2-pole configuration provides coordinated protection and switching of two conductors.
• B tripping characteristic suited to circuits with relatively low normal inrush currents.
• 15 kA interrupting rating for robust short-circuit protection.
• UL 1077 classification for supplementary protection within electrical equipment.
• Compact modular construction for efficient DIN-rail panel installation.

Key Features

• ABB System pro M compact ST200M series.
• 16 A rated current.
• 2-pole configuration.
• B tripping characteristic.
• 15 kA interrupting rating.
• UL 1077 supplementary protector.
• Thermal-magnetic overload and short-circuit protection.
• Resettable protection following an overcurrent trip.
• Modular design for DIN-rail installation in control and equipment panels.

Reliable Supplementary Protection for Electrical Equipment

Supplementary protectors such as the ABB ST202M-B16 provide overcurrent protection within industrial machinery and other electrical equipment where appropriate branch-circuit protection is provided separately. Thermal-magnetic operation combines time-dependent overload protection with rapid magnetic response when sufficiently high short-circuit current occurs.

The ST200M series provides a compact modular solution for protecting control circuits and equipment loads. The two-pole ST202M-B16 provides linked protection of two conductors, while its B characteristic is well suited to circuits with relatively low normal inrush current where responsive magnetic protection is beneficial.

Typical Applications

• Industrial machinery and equipment panels.
• Automation and process-control systems.
• Control and auxiliary circuits.
• Resistive and relatively low-inrush electrical loads.
• Electrical equipment requiring supplementary overcurrent protection.
• OEM machinery and industrial control cabinets.