hvac relay switch for sale, brand-new and used.

The D8129 is suitable for applications requiring Form "C" relay to operate auxiliary systems or to display fire system status at remote annunciators. Building components such as HVAC, door lock releases, and stairwell pressurization can be interfaced with the D8129 for complete system control and monitoring. Industrial, commercial, and institutional facilities are typical installations for the D8129 module.

Supco SPP8E E Series Electronic Potential Relay style Hard Start Kit, Greater than 1 Horsepower Range, 189-227F Capacitor Size: Product details: Electronic potential relay for starting motors Two-wire connection for installation Back-up electronic timing circuit to protect the compressor Voltage-sensing capability UL recognized for safety and NATE certified for HVAC applications.

Radonics D7412G- SpecificationsPrimary: 16.5 VAC 40 VA class 2 plug-in Transformer (D1640) Voltage Input (Power Supply)Secondary: Sealed lead-acid rechargeable (12 VDC, 7 Ah or 12 VDC, 17.2 or 18 Ah) battery.

ARCHITECT AND ENGINEER SPECIFICATIONS  Four (4) models available  Addressable and conve

The Model LD1-24 and the AQS models are small electronic control relays for detecting a rising water level in HVAC and Building Automation System, BAS, applications. Inside a waterproof enclosure, the water level detector features a medium-power relay, which is operated by water reaching the trip level, and can be used to control alarms or other equipment. The relay is normally energized when the power supply is switched on and no water is present.

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Three new power packs in this order The Power Pack supplies low voltage power to ceiling and wall mounted occupancy sensors, and employs a heavy duty 20A relay to switch lighting and HVAC loads based on a control signal received from the occupancy sensor. The SLSPP1277 power pack accepts both 120V and 277V input and supplies up to 100mA at 24DC. The SLSPP1347 power pack accepts both 347V input and supplies up to 150mA at 24VDC.

This Listing is for ONE(1) Honeywell L4006A1967 Aquastat Controller w/Well Aquastat Controller 100F - 240F operating temp and 5F-30F adjustable differential Totally enclosed Micro Switch snap-action switches operate

ROBERTSHAW 695-200 ROBERTSHAW 695-200 Integrated Furnace Control The 695-200 is an exact replacement for the following Rheem/United Technologies part numbers:United Technologies 1012-925, 1012-925A, 1012-925B, 1012-925C, Rheem 62-24268-01, 62-24268-02, 62-24268-03 Product Benefits • Field selectable fan delay (90, 120, 160, 180 seconds)• High and low speed fan relay contacts• Output term

The B308 Octo-output Module is suitable for applications requiring Form C outputs to operate auxiliary systems or to display fire system status at remote annunciators. Building components such as HVAC, door lock releases, and stairwell pressurization can interface with the B308 for complete system control and monitoring. Industrial, commercial, and institutional facilities are typical installations for the B308 module.

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Diversitech WS-1 The Wet Switch is a solid state device designed to detect the presence of condensate water overflow. The Wet Switch is placed into the secondary drain pan – a normally dry pan. If the primary drain pan fails, condensate water will overflow into the secondary drain pan.