MTL SD32T3 32V DC 400mA 3-Wire Surge Protector DIN Rail Mount SPD for Vibration Sensors
Price:
Negotiable
MOQ:
1
Delivery Time:
ship out immediately upon payment received
Brand:
EATON
Product Description
MTL SD32T3 Surge Protector 32V DC 400mA 3-Wire DIN Rail SPD
Product Overview
The MTL SD32T3 is a high-performance three-terminal surge protection device (SPD) from Eaton's Crouse-Hinds MTL SD Series, specifically engineered for 3-wire transmitters and sensors requiring separate power supply and signal lines. This ultra-slim DIN rail mount module provides comprehensive hybrid surge protection for all three wires simultaneously, making it the ideal solution for protecting sensitive instrumentation in hazardous and harsh industrial environments.
This is the most compact 3-wire surge protector on the market.
Key Features
- Complete 3-Wire Protection in a Single Unit - Full hybrid surge protection for all three wires in one ultra-compact module
- Ultra-Slim Space-Saving Design - Exceptionally slim footprint for high packing densities on DIN rails
- Proven Hybrid Protection Circuitry - Advanced multistage hybrid technology with 20kA maximum surge current
- No Loop Resistance Added for Signal Lines - Minimal series resistance (2.2Ω per line) with no significant effect on signal accuracy
- Hazardous Area Certified - ATEX and IECEx certified for potentially explosive atmospheres
- Simple DIN Rail Installation - Snap-on mounting to standard 35mm top-hat DIN rail
- 10-Year Product Warranty - Industry-leading long-term reliability assurance
Technical Specifications
| Parameter | Value |
|---|---|
| Model | SD32T3 |
| Manufacturer | Eaton MTL (Crouse-Hinds series) |
| Nominal Voltage (DC) | 32 V |
| Nominal Current (In) | 400 mA |
| Maximum Surge Current (8/20 µs) | 20 kA |
| Response Time | <1 ns |
| Series Resistance | 2.2 Ω/line |
| Maximum Continuous Operating Voltage | 36 V |
| Voltage Protection Level @1kV/µs | <45 V |
| Bandwidth (fG) | 720 kHz |
| Number of Terminals | 3 terminals |
| Operating Temperature | -40°C to +80°C |
| Weight | 70 g |
| Warranty | 10-year limited warranty |
Certifications & Compliance
| Certification | Status | Details |
|---|---|---|
| ATEX | Certified | II 3 G Ex nA IIC T5 Gc |
| IECEx | Certified | IECEx BAS 19.0108X |
| SIL 3 | Compliant | Suitable for safety instrumented systems |
| CSA | Certified | For North American installations |
| RoHS | Compliant | Restriction of Hazardous Substances |
Applications
The MTL SD32T3 is specifically designed for protecting three-wire transmitters and sensors in various industrial applications:
| Application Area | Specific Use Cases |
|---|---|
| Process Control | 3-wire pressure transmitters, level transmitters, flow meters |
| Vibration Monitoring | 3-wire vibration sensors on rotating machinery |
| Temperature Measurement | 3-wire temperature transmitters |
| Separately Powered 4-20mA Loops | 3-wire 4-20mA transmitters with separate power supply |
| Hazardous Areas | Oil & gas, chemical, pharmaceutical, mining facilities |
| Safety Systems | Emergency shutdown (ESD) systems, fire and gas detectors |
Installation Guidelines
Mounting Instructions:
- Snap the SD32T3 onto standard 35mm top-hat DIN rail until it clicks securely into place
- Ensure proper grounding through the DIN rail (automatic when mounted on grounded rail)
- The ultra-slim footprint allows high-density side-by-side mounting
Wiring Instructions:
- Terminal 1: Power supply positive (+) from field side
- Terminal 2: Power supply negative/return (-) / common
- Terminal 3: 4-20mA signal output
Important Notes: The device connects in series with the protected circuit. Series resistance of 2.2Ω is added per line. Ensure all three wires are connected for complete protection. Follow local electrical codes for proper installation.
Key Advantages
✅ Complete 3-wire protection - All three wires protected in one compact unit
✅ Most compact design - Industry-leading space-saving footprint
✅ 20kA surge capacity - Handles severe transient events
✅ <1ns response time - Instantaneous protection
✅ 720kHz bandwidth - Optimized for sensor signals
✅ Low series resistance - 2.2Ω per line minimizes signal impact
✅ ATEX & IECEx certified - Suitable for hazardous areas
✅ SIL 3 compliant - For safety instrumented systems
✅ Simple DIN rail mounting - Quick and secure installation
✅ 10-year warranty - Long-term reliability assurance
Ordering Information
| Product | Part Number | Availability |
|---|---|---|
| MTL SD32T3 Surge Protector | SD32T3 | In stock - authorized distributors |
Supplier Standard Pack: 15 units
Warranty: 10-year manufacturer's warranty
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Company
Shenzhen Hengyo Power Technology Co., Limited
Location
Room 2407, B Block No.145 Chengshi Zhuchang Bld, Bagua 2nd Rd, Futian Dist. Shenzhen City, China 518029
Contact Person
Vivian Chan