Description
First Company E141 Heat Sequencer 12SH20 Overview
The First Company E141 Heat Sequencer (model 12SH20) is a precision electrical control component designed for use in electric furnaces and air handlers. By staging heating elements on and off in a controlled sequence, this heat sequencer prevents simultaneous element activation — protecting your system from voltage spikes, circuit overloads, and excessive current draw at startup.
Key Features
- Designed as a direct OEM replacement for First Company electric heating systems
- Sequences multiple heating elements to distribute electrical load evenly
- Helps extend the service life of heating elements and electrical components
- Reduces nuisance tripping of circuit breakers caused by inrush current
- Compact design for straightforward installation in existing equipment
- Reliable bimetal or resistive heating element actuation for consistent operation
Applications
- First Company electric air handlers and furnaces
- Multi-stage electric resistance heating systems
- Replacement of worn or failed heat sequencer controls
Why Use a Heat Sequencer?
In electric heating systems with multiple heating elements, energizing all elements simultaneously can cause significant voltage sags and may trip breakers. The E141 12SH20 heat sequencer staggers element activation, ensuring smooth, efficient startup and consistent heating performance throughout the heating cycle.
Ordering Information
- Brand: First Company
- SKU: E141
- Model: 12SH20
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