Patterson-Kelley High Limit Temperature Switch - 2650000189
Patterson-Kelley High Limit Temperature Switch - 2650000189
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The Patterson-Kelley 2650000189 High Limit Temperature Switch is an essential safety control mechanism engineered for heavy-duty commercial and industrial boilers. Functioning as a fail-safe defensive sentinel, this switch continuously monitors internal heat engine and water-jacket temperatures. If the system experiences a primary thermostat failure or runaway thermal climb that exceeds pre-calibrated factory safety parameters, this device instantly breaks the electrical control loop to safely shut down combustion before equipment damage or excessive system pressures occur.
Advanced Safety & Mechanical Safeguards:
- Strict Manual Reset Safety Logic: Features a positive mechanical manual reset button. Following a high-temperature safety trip, the switch locks out permanently and cannot be bypassed by cycling the power, forcing a licensed HVAC technician to inspect and resolve the root heating failure.
- Premium Capillary Thermal Sensing: Utilizing a rugged liquid-filled sensing bulb and a flexible armored capillary tube, it responds rapidly to sharp fluid temperature spikes, ensuring accurate thermal tracking without micro-amp signaling lag.
- Direct OEM Factory Integration: Specifically designed to align with Patterson-Kelley's strict safety standards, keeping commercial boilers compliant with ASME CSD-1 code requirements.
System Application Note: Universally compatible across select high-efficiency condensing and non-condensing commercial boiler architectures, including premium P-K MACH®, SONIC®, and STORM® configurations.
| Technical Metric | Operational Threshold Data |
|---|---|
| Manufacturer Part Number | 2650000189 |
| Component Type | High Limit Aquastat / Safety Cut-Out Switch |
| Reset Functionality | Manual Mechanical Reset Button (Lockout Protected) |
| Sensing Mechanism | Liquid-Filled Copper Sensing Bulb & Capillary Tube |
| Electrical Contact Rating | Heavy-Duty Low Voltage / Line Voltage Control Circuit Compatible |
| Contact Configuration | SPST (Normally Closed, Opens on Temperature Rise) |
| Code Compliance Standards | ASME CSD-1 Factory Certified Component |
Corporate Procurement & PO Processing
Formal Purchase Orders (POs) and tax-exempt ordering are accepted for commercial contractors and institutional facilities.
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- LTL Freight Dispatch: Heavy commercial units ship directly via insured LTL carrier with delivery coordination included.
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