Description
Intermatic T1871BR 24-Hour Mechanical Timer Overview
The Intermatic T1871BR is a heavy-duty 24-hour mechanical time switch engineered for dependable, repeatable on/off control of HVAC equipment, lighting, motors, and other commercial or industrial loads. With a 120V operating voltage and a NEMA 3 rated enclosure, this timer is built to perform in demanding indoor and protected outdoor environments.
Key Features
- 24-hour dial cycle for precise daily scheduling
- 120V operating voltage for standard single-phase applications
- 2NO/2NC (2 Normally Open / 2 Normally Closed) contact configuration for versatile switching control
- NEMA 3 rated enclosure — provides protection against rain, sleet, and windblown dust for outdoor or semi-exposed installations
- Mechanical operation — no programming required, simple trippers set on/off times
- Durable Intermatic construction for long service life in commercial and light industrial settings
Typical Applications
- HVAC equipment cycling and scheduling
- Lighting control for commercial buildings
- Motor and pump time switching
- Exhaust fans, ventilation systems, and other time-controlled loads
Specifications
- Brand: Intermatic
- Model / SKU: T1871BR
- Timer Cycle: 24-Hour
- Voltage: 120V
- Contact Configuration: 2NO / 2NC
- Enclosure Rating: NEMA 3
- Operation Type: Mechanical







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