Overview
The Emerson STFE030-24L is part of the SolaHD STF Elite Series of active tracking filters designed for single-phase 240V industrial power applications. This unit combines active filtering with surge suppression to protect sensitive electrical equipment from voltage transients, harmonic distortion, and broadband noise across a wide frequency spectrum.
Key Features
- 90 dB normal mode noise attenuation (100 kHz–50 MHz frequency range)
- 60 dB common mode noise attenuation (5 MHz–50 MHz)
- Sub-nanosecond response time (≤0.5 ns normal mode, ≤5 ns common mode)
- 45 kA peak surge current suppression capability
- Form C relay contacts for DC OK signal monitoring
- Green LED unit status indicator
- DIN rail mounting for easy integration in panel layouts
Technical Specifications
- Input Voltage: 240V AC (0–275 Vrms)
- Line Frequency: 47–63 Hz
- Continuous Current Rating: 3A
- Surge Current Rating: 3.75A
- Peak Voltage Rating: 3.0 kV
- Noise Attenuation: 24 dB typical
- Mounting: DIN rail (horizontal or vertical)
- Certifications: UL 1449 (3rd Edition, Type 4), UL 1283, CSA C22.2 No. 8, EN 61643-11:2002, RoHS Compliant
Typical Applications
The STFE030-24L is ideal for protecting industrial control systems, data acquisition equipment, programmable logic controllers (PLCs), variable frequency drives (VFDs), and instrumentation that operate on single-phase 240V circuits. It is commonly deployed in manufacturing facilities, HVAC systems, laboratory environments, and any setting where power quality disturbances could cause equipment malfunction or downtime.
Compatibility & Replacements
Compatible With
- Single-phase 240V power distribution panels
- DIN rail mounting systems (19 mm spacing)
- Standard 240V industrial control circuits
- Systems requiring multi-mode surge and noise protection
Replaces / Drop-In Replacement For
- STFE030-24L (identical unit—use for exact matching or spare stock)
- Earlier SolaHD STF Series models (verify pin and connector compatibility with your system integrator)
Works With
- Form C relay contacts enable integration with remote monitoring and PLC-based alarm systems
- Compatible with standard DIN rail power distribution and motor control centers
- Suitable for use alongside industrial UPS, power conditioners, and soft-starter circuits
