MTL SD32X Surge Protection Device 32V DC 20kA Ultra-slim DIN Rail Mount SPD for 4-20mA Loops
Price:
price negotiation
MOQ:
5
Delivery Time:
ship out immediately after payment received
Brand:
MTL
Product Description
MTL SD32X Surge Protection Device 32V 20kA SPD for 4-20mA Loops MTL SD Series
Product Overview
The MTL SD32X is a high-performance surge protective device (SPD) from the trusted MTL SD Series, designed specifically to protect sensitive electronic equipment and systems from damaging transient overvoltage on signal and I/O cabling. Combining ultra-slim space-saving design with proven hybrid protection circuitry, the SD32X delivers 20kA maximum surge current capacity in a compact 7mm wide package suitable for DIN rail mounting.
Key Features
- Ultra-slim Design - 7mm width enables high packing density on 35mm DIN rail, saving valuable cabinet space
- High Surge Current Rating - 20kA (8/20µs) maximum discharge current with 3kA nominal rating
- Multistage Hybrid Protection - Reliable hybrid circuitry provides protection line-to-line and line-to-ground
- Wide Operating Temperature - -40°C to +80°C, suitable for harsh industrial environments
- Broadband Compatibility - 25kHz bandwidth supports higher bandwidth applications
- Fast Response - <1ns response time for instantaneous protection
Technical Specifications
| Parameter | Value |
|---|---|
| Nominal Voltage (DC) | 32V DC |
| Nominal Voltage (AC) | 22V AC |
| Max Continuous Operating Voltage | 36V AC |
| Nominal Current | 400mA |
| Max Surge Current (8/20µs) | 20kA |
| Nominal Discharge Current (8/20µs) | 3kA |
| Bandwidth | 25kHz |
| Leakage Current | ≤5µA |
| Response Time | <1ns |
| Mounting | 35mm DIN Rail |
| Dimensions (W×H×D) | 7mm × 109.6mm × 99mm |
| Operating Temperature | -40°C to +80°C |
| Certifications | ATEX, IECEx, RoHS |
Applications
The MTL SD32X is ideal for protecting:
- 4-20mA loops - Process control instrumentation
- Thermocouples (THCs) - Temperature measurement circuits
- Digital I/O - Alarms, LEDs, solenoid valves
- Shutdown systems - Emergency protection circuits
- Fire and gas detectors - Safety monitoring systems
Ordering Information
| Model | Description |
|---|---|
| SD32X | 32V surge protector for signal/data lines |
| SD07X | 7V version |
| SD16X | 16V version |
| SD55X | 55V version |
Why Choose MTL SD32X?
The SD Series represents the ultimate surge protection solution for process equipment, I/O systems, and communications networks. With unparalleled packing densities, application versatility, simple installation, and optional loop disconnect facilities, the SD32X delivers reliable protection backed by a 10-year product warranty.
Detailed Specifications
Electrical Characteristics
| Parameter | Condition | Value |
|---|---|---|
| Nominal Voltage (Un) | DC | 32V |
| Nominal Voltage (Un) | AC | 22V |
| Max Continuous Operating Voltage (Uc) | AC | 36V |
| Nominal Current (In) | 40°C | 400mA |
| Leakage Current | @Un | ≤5µA |
| Series Resistance | per line | Low resistance |
| Bandwidth | -3dB | 25kHz |
| Response Time | - | <1ns |
Surge Protection Ratings
| Parameter | Value | Standard |
|---|---|---|
| Max Surge Current (Imax) | 20kA (8/20µs) | IEC 61643-21 |
| Nominal Discharge Current (Isn) | 3kA (8/20µs) | IEC 61643-21 |
| Impulse Current (Iimp) | 2.8kA (10/350µs) | IEC 61643-21 |
| Voltage Protection Level (Up) | Line-Line / Line-Ground | Refer to datasheet |
| Test Classification | A2, B2, C1, C2, C3 | IEC 61643-21 |
Mechanical Specifications
| Parameter | Value |
|---|---|
| Dimensions (W × H × D) | 7mm × 109.6mm × 99mm |
| Mounting | 35mm DIN rail (EN 60715) |
| Terminal Type | Screw terminals |
| Wire Gauge | 0.2 - 2.5mm² (24-12 AWG) |
| Housing Material | Polyamide (UL94 V-0) |
| Weight | ~0.07kg |
Environmental Specifications
| Parameter | Value |
|---|---|
| Operating Temperature | -40°C to +80°C |
| Storage Temperature | -40°C to +80°C |
| Humidity | 5-95% RH, non-condensing |
| Ingress Protection | IP20 |
Certifications & Compliance
- ATEX / IECEx certified (intrinsically safe for hazardous areas)
- RoHS compliant
- Suitable for SIL3 loops per IEC 61508
Protection Modes
The SD32X provides full hybrid surge protection for:
- Line-to-Line (differential mode)
- Each Line-to-Ground (common mode)
- Shield-to-Ground (when applicable)
Installation Diagram
Field Side Protected Side
| |
+---[SD32X]---+---To I/O Card/PLC
| |
⏚ (Ground) ⏚ (Optional)
Connect ground terminal to local instrument ground busbar. For Intrinsically Safe (IS) applications, refer to control drawing.
Cross-Reference Information
| Replacement For | Description |
|---|---|
| MTL SD32 | Legacy model - SD32X offers improved surge rating |
| Pepperl+Fuchs | K-LB-32 series |
| Phoenix Contact | PT 2x2-BE series |
Order Code
- Manufacturer Part No: SD32X
- Order Code (Farnell): 772471
- Product Range: Crouse-Hinds MTL SD Series
Manufacturer: Eaton MTL (Crouse-Hinds MTL) | Country of Origin: Great Britain
Similar Products
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
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