{"product_id":"honeywell-r845a1030-dpst-switching-relay-with-internal-transformer-for-hvac-zone-control-systems","title":"Honeywell R845A1030 DPST Switching Relay with Internal Transformer for HVAC Zone Control Systems","description":"\u003ch4 data-start=\"0\" data-end=\"14\"\u003eDescription\u003c\/h4\u003e\n\u003cp data-start=\"15\" data-end=\"474\"\u003eThe Honeywell R845A1030 Switching Relay is a DPST line voltage relay designed for hot water zone control systems and low-voltage operated switching applications. Featuring an internal 24 VAC transformer and dual-pole switching capability, this relay provides dependable control for HVAC zoning, pumps, valves, and auxiliary line voltage loads. The Honeywell R845A1030 is engineered for reliable operation in residential and commercial heating control systems.\u003c\/p\u003e\n\u003cp data-start=\"15\" data-end=\"474\"\u003e \u003c\/p\u003e\n\u003cp data-start=\"15\" data-end=\"474\"\u003e \u003c\/p\u003e\n\u003ch4 data-start=\"15\" data-end=\"474\"\u003eTechnical Specifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHVAC Controls\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eR845A1030\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSwitching Relays\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRelay Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDPST Line Voltage Relay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSwitching Action\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDPST\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCoil Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePrimary Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e120 VAC, 50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSecondary Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Input Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5.0 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThermostat Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLow Voltage (Class 2) Two-Wire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMain Contact Rating at 120 VAC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7.4A AFL, 44.4A ALR, 10A Resistive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMain Contact Rating at 240 VAC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.7A AFL, 22.2A ALR, 6A Resistive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSecondary Contact Rating at 120 VAC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3A AFL, 18A ALR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSecondary Contact Rating at 240 VAC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2A AFL, 12A ALR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Connected Load\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2000 VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNumber of Zones\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eElectrical Connections\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2-Wire Control Circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e105°F to 115°F Maximum Ambient\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnclosure Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIntegral Enclosure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL Listed, CSA Certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5-1\/4 in H x 4-1\/4 in W x 2-5\/16 in D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApproximately 2 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp data-start=\"15\" data-end=\"474\"\u003e \u003c\/p\u003e\n\u003ch4 data-start=\"476\" data-end=\"496\"\u003eInformation About R845A1030\u003c\/h4\u003e\n\u003cp data-start=\"497\" data-end=\"1074\"\u003eThe R845A1030 is a TRADELINE series switching relay manufactured by Honeywell for hydronic heating and zoning applications. It combines a built-in transformer with DPST relay switching, allowing low-voltage thermostats or controllers to operate line-voltage equipment efficiently and safely. The relay is compatible with low-voltage Class 2 two-wire thermostats and supports independent switching of multiple connected loads in heating systems. Housed in an integrated enclosure, the unit is UL listed and CSA certified for dependable performance in HVAC control installations.\u003c\/p\u003e\n\u003cp data-start=\"1076\" data-end=\"1091\"\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1092\" data-end=\"2291\"\u003e\n\u003cli data-start=\"1092\" data-end=\"1201\"\u003eDPST Switching Relay: Provides double-pole single-throw switching for line voltage heating control systems.\u003c\/li\u003e\n\u003cli data-start=\"1202\" data-end=\"1302\"\u003eIntegral Transformer: Includes a built-in 24 VAC transformer for low-voltage thermostat operation.\u003c\/li\u003e\n\u003cli data-start=\"1303\" data-end=\"1416\"\u003eHVAC Zone Control Compatibility: Designed for hot water zone control systems and hydronic heating applications.\u003c\/li\u003e\n\u003cli data-start=\"1417\" data-end=\"1508\"\u003eLow-Voltage Thermostat Support: Compatible with Class 2 two-wire low-voltage thermostats.\u003c\/li\u003e\n\u003cli data-start=\"1509\" data-end=\"1590\"\u003eDual Load Switching: Supports SPST control of two separate loads when required.\u003c\/li\u003e\n\u003cli data-start=\"1591\" data-end=\"1694\"\u003eHeavy-Duty Contact Ratings: Rated for high inrush and resistive loads in HVAC equipment applications.\u003c\/li\u003e\n\u003cli data-start=\"1695\" data-end=\"1799\"\u003eIntegrated Protective Enclosure: Factory-enclosed design improves installation safety and reliability.\u003c\/li\u003e\n\u003cli data-start=\"1800\" data-end=\"1879\"\u003e120 VAC Operation: Operates on standard 120 VAC, 50\/60 Hz electrical systems.\u003c\/li\u003e\n\u003cli data-start=\"1880\" data-end=\"1964\"\u003eUL and CSA Approved: Certified for use in residential and commercial HVAC systems.\u003c\/li\u003e\n\u003cli data-start=\"1965\" data-end=\"2074\"\u003eCompact Installation Footprint: Compact housing allows easy mounting in control panels or mechanical rooms.\u003c\/li\u003e\n\u003cli data-start=\"2075\" data-end=\"2179\"\u003eWide Load Compatibility: Suitable for pumps, valves, circulators, and other HVAC line-voltage devices.\u003c\/li\u003e\n\u003cli data-start=\"2180\" data-end=\"2291\"\u003eReliable Relay Performance: Designed for continuous-duty operation in demanding heating control environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2293\" data-end=\"2444\"\u003eThe R845A1030 delivers the reliability and precision required for HVAC zoning, hydronic heating control, and line-voltage relay switching applications.\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":51554830254378,"sku":"R845A1030","price":169.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/0392\/4266\/files\/s-l1600_c02a2b36-a987-4b50-9ed6-f90aef7672e1.webp?v=1779300319","url":"https:\/\/iqelectro.com\/products\/honeywell-r845a1030-dpst-switching-relay-with-internal-transformer-for-hvac-zone-control-systems","provider":"IQElectro","version":"1.0","type":"link"}