{"product_id":"3-za40b-edwards-est-40w-zoned-audio-amplifier-with-2570-vrms-output-and-nac-circuit","title":"3-ZA40B | Edwards EST 40W Zoned Audio Amplifier with 25\/70 VRMS Output and NAC Circuit","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-end=\"396\" data-start=\"144\"\u003eThe Edwards™ 3-ZA40B is a 40-watt zoned amplifier module for the EST3 fire alarm and voice evacuation system. It provides digital audio channel selection with built-in de-multiplexing circuitry and supports either 25 VRMS or 70 VRMS speaker circuits. Designed for reliable emergency communication, it also includes a 24 VDC NAC output for strobe synchronization.\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"574\" data-start=\"284\"\u003e \u003c\/p\u003e\n\u003cp class=\"\" data-end=\"574\" data-start=\"284\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable style=\"width: 100%; height: 411.47px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.0354%; height: 19.5938px;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.652%; height: 19.5938px;\"\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.0354%; height: 19.5938px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.652%; height: 19.5938px;\"\u003eEdwards \/ EST\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.0354%; height: 19.5938px;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.652%; height: 19.5938px;\"\u003eFlame Safety Products\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.0354%; height: 19.5938px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.652%; height: 19.5938px;\"\u003e3-ZA40B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.0354%; height: 19.5938px;\"\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.652%; height: 19.5938px;\"\u003eFlame Safety Amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.0354%; height: 19.5938px;\"\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.652%; height: 19.5938px;\"\u003eZoned Amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.0354%; height: 19.5938px;\"\u003e\u003cstrong\u003ePower Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.652%; height: 19.5938px;\"\u003e40 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.0354%; height: 19.5938px;\"\u003e\u003cstrong\u003eOutput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.652%; height: 19.5938px;\"\u003e25 VRMS or 70 VRMS (selectable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.0354%; height: 19.5938px;\"\u003e\u003cstrong\u003eInput\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.652%; height: 19.5938px;\"\u003e8-channel multiplexed digitized audio\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.0354%; height: 19.5938px;\"\u003e\u003cstrong\u003eWiring\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.652%; height: 19.5938px;\"\u003eClass A or Class B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.0354%; height: 19.5938px;\"\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.652%; height: 19.5938px;\"\u003e400 Hz to 4 kHz ±3 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.0354%; height: 19.5938px;\"\u003e\u003cstrong\u003eHarmonic Distortion\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.652%; height: 19.5938px;\"\u003e\u0026lt; 7%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.0354%; height: 19.5938px;\"\u003e\u003cstrong\u003eNAC Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.652%; height: 19.5938px;\"\u003e24 VDC, 3.5 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.0354%; height: 19.5938px;\"\u003e\u003cstrong\u003eEOL Resistor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.652%; height: 19.5938px;\"\u003e15 kΩ (internal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.0354%; height: 19.5938px;\"\u003e\u003cstrong\u003eWire Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.652%; height: 19.5938px;\"\u003e12–18 AWG (1.0–4.0 mm²)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.0354%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpace Requirement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.652%; height: 19.5938px;\"\u003e1 LRM rail space\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.0354%; height: 19.5938px;\"\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.652%; height: 19.5938px;\"\u003e32–120 °F (0–49 °C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.0354%; height: 19.5938px;\"\u003e\u003cstrong\u003eRelative Humidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.652%; height: 19.5938px;\"\u003e93% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.0354%; height: 19.5938px;\"\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.652%; height: 19.5938px;\"\u003eCabinet rail-mounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.0354%; height: 19.5938px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.652%; height: 19.5938px;\"\u003e1.20 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About \u003cspan data-sheets-root=\"1\"\u003e3-ZA40B\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe 3-ZA40B is part of the EST3 audio amplifier family, engineered to deliver high-quality voice and tone signals in life safety applications. It mounts in the EST3 cabinet, occupying one LRM rail space, and receives power and data through the system rail assembly. With software-controlled audio channel selection, the module can output live paging or stored messages from any of eight multiplexed channels. The amplifier supports Class A or B wiring, has selectable 25 VRMS or 70 VRMS outputs, and includes a dedicated 24 VDC NAC rated at 3.5 A for visual signaling devices such as strobes. Its rugged, digitally controlled design ensures compliance with fire alarm and emergency communication standards.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDigital Audio Distribution: 8-channel multiplexed input with built-in de-multiplexing.\u003c\/li\u003e\n\u003cli\u003eFlexible Output Voltage: Selectable 25 VRMS or 70 VRMS operation.\u003c\/li\u003e\n\u003cli\u003e40-Watt Power Rating: Provides reliable output for medium-sized zones.\u003c\/li\u003e\n\u003cli\u003eIntegrated NAC Output: 24 VDC, 3.5 A power-limited NAC included for strobes.\u003c\/li\u003e\n\u003cli\u003eSoftware Controlled: Audio channel selection managed through network programming.\u003c\/li\u003e\n\u003cli\u003eCompact Design: Occupies only one LRM rail space in the cabinet.\u003c\/li\u003e\n\u003cli\u003eRemovable Terminals: Simplifies field wiring connections.\u003c\/li\u003e\n\u003cli\u003eFrequency Response: 400 Hz to 4 kHz with less than 7% harmonic distortion.\u003c\/li\u003e\n\u003cli\u003eFault Tolerance: Supports Class A or Class B wiring configurations.\u003c\/li\u003e\n\u003cli\u003eEnvironmental Performance: Operates in temperatures from 0 °C to 49 °C with up to 93% RH.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 3-ZA40B delivers the reliability and clarity required for fire alarm voice evacuation and signaling applications.\u003c\/p\u003e","brand":"Edwards EST","offers":[{"title":"Default Title","offer_id":49105188913408,"sku":"3-ZA40B","price":1421.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/874f5cec0a2540fe836a04e5a88ffa03.jpg?v=1785542198","url":"https:\/\/alotechparts.com\/products\/3-za40b-edwards-est-40w-zoned-audio-amplifier-with-2570-vrms-output-and-nac-circuit","provider":"Alo Tech Solutions","version":"1.0","type":"link"}