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Fail-Safe Spring Return: Integrated mechanical spring ensures the damper or valve returns to its normal position upon power interruption
As a direct genuine Armstrong HVAC part
While this specific model is optimized for 24 VAC excitation
For technicians servicing legacy or modern hydronic systems
ABB CAL5-11 Auxiliary Contact 340155-7026 Fail-Safe Spring Return: Integrated mechanicalThe ABB CAL5 11 is a high performance side mounted auxiliary contact block designed for seamless integration with ABB A Series contactors, specifically models A9 through A75. Featuring a 1 NO (Normally Open) and 1 NC (Normally Closed) configuration, this essential component provides reliable feedback signals and interlocking capabilities for complex motor control circuits. Engineered for industrial automation environments, the CAL5 11 technical