Amerex Manual Reset Relay - 12526
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Wholesale PricingThe Amerex 12526 Manual Reset Relay is a mission-critical fire system electrical interface engineered for the Amerex KP (Kitchen Protection) and Industrial (IS) fire suppression systems. In the sophisticated hierarchy of a modern safety network, the 12526 serves as the definitive safety circuit gatekeeper for fuel flow. Designed to work in tandem with electric solenoid gas valves, this relay ensures that the restoration of power following a building blackout or a system discharge does not result in the dangerous, automatic release of raw gas into the hazard zone.
Its primary function is to provide a manual gas lockout once the safety circuit has been interrupted. By requiring a deliberate human action to re-energize the gas valve, the 12526 eliminates the risk of unignited gas accumulation caused by extinguished pilot lights. Utilizing this genuine Amerex 12526 ensures that your facility's electrical gas interlock remains fully compliant with UL 300 safety standards and NFPA mandates.
DPST (Double Pole, Single Throw) Configuration
The 12526 utilizes a double pole single throw contact arrangement, allowing it to switch both the Hot and Neutral lines simultaneously. When the relay is energized, it completes the circuit to the gas valve, providing the continuous power required to hold the valve open against its internal mechanical closing spring.
Inductive Load Management
Solenoid gas valves are inductive loads that can create high-voltage back-EMF spikes during de-energization. The 12526 is rated for 8 AFL (Amps Full Load) and 48 ALR (Amps Locked Rotor), ensuring the relay's contacts do not weld or pit over years of service and maintain a clean break in the circuit every time the system trips.
Zero-Voltage Reset Logic
In the event of a fire system actuation or a building power flicker, the magnetic field in the relay coil collapses and the contacts snap open, closing the gas valve. Critically, the 12526 will not automatically re-latch when power returns. This zero-voltage reset logic is the global standard for modern industrial fuel safety.
Integrated Pilot Light Monitoring
The relay features an integrated pilot light that provides immediate feedback on the state of the gas interlock. A lit pilot light indicates the relay is latched and power is being delivered to the gas valve (the safe operating state). An unlit pilot light indicates the safety circuit has been broken, whether from a system trip, a power loss, or a microswitch failure. This visual feedback allows staff to distinguish between a localized appliance malfunction and a system-wide safety shutdown, reducing unnecessary service calls.
- High-Volume Commercial Kitchens: Integrated with electric gas valves to protect range lines and fryers with a code-compliant manual reset lockout.
- Industrial Paint Spray Booths: Securing fuel lines to burners and heaters within the booth enclosure.
- Institutional Dining: Providing a centralized gas lockout for hospitals and universities where operational continuity and safety are paramount.
- Gas-Fired HVAC Equipment: Serving as the safety interlock for air make-up units and localized heaters.
- Electrical Retrofits: Replacing aging, non-compliant automatic reset relays to achieve NFPA 96 compliance.
| Feature | Details |
|---|---|
| Manufacturer | Amerex Corporation |
| Part Number | 12526 |
| Contact Configuration | DPST (Double Pole, Single Throw) |
| Voltage Rating | 120 VAC |
| Inductive Load Rating | 8 AFL / 48 ALR |
| Resistive Load | 8 Amps (120 VAC) |
| Operating Logic | Normally Closed / Zero-Voltage Manual Reset |
| System Compatibility | Amerex KP, Amerex IS |
| Certifications | UL Listed, ULC Listed |
The Manual Reset Mandate
NFPA 96, Section 10.6.2, requires that all fuel shut-off devices must be manually reset. The 12526 is specifically listed to satisfy this requirement. During a fire marshal walkthrough, the technician must demonstrate that restoring power to the building does not automatically restore gas flow.
Microswitch Coordination
The 12526 is typically wired through the Normally Closed (NC) contacts of a microswitch located in the Mechanical Release Module (MRM). When the system is tripped, the microswitch opens the NC circuit, causing the relay to drop the load and close the gas valve.
Remote Location Strategy
While the fire system control head is often hidden, the manual reset relay should be mounted in a conspicuous location such as near the kitchen manager's office. This ensures the reset button is accessible and the pilot light is visible to staff.
The Semi-Annual Flicker Test
During a 6-month inspection, the technician should simulate a power loss. If the relay automatically re-latches upon power restoration, the internal mechanical latching mechanism has failed and the unit must be replaced immediately.
Can I use the 12526 with a 240V gas valve?
No. The 12526 is specifically rated for 120 VAC. Using it with higher voltages will result in coil failure and potentially create an electrical fire hazard. Always verify your solenoid gas valve control voltage before installation.
Does this relay protect against gas leaks during a fire?
Not directly. Its job is to ensure that after the fire system shuts the gas off, the gas stays off until it is safe to relight the pilot lights. This prevents raw gas accumulation following a suppression event.
Can one relay control multiple gas valves?
Yes, provided the total combined inductive load of all valves does not exceed the 8 AFL rating. For larger culinary batteries, it is often safer to utilize multiple Amerex 12526 relays to avoid overloading the contacts.
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