Pepperl+Fuchs Z728.H | Surge Protection | Ex ia | 2-Wire Loop | SIL2

Pepperl+Fuchs Z728.H | Surge Protection Barrier, 2-Wire Loop, Ex ia, DIN Rail, SIL2

Overview:

The Pepperl+Fuchs Z728.H is a surge protection barrier designed to protect intrinsically safe circuits in hazardous areas. Suitable for 2-wire loop-powered devices, this compact unit helps prevent damage from voltage surges and transients in field signal lines. Certified for SIL2 functional safety and ATEX Ex ia, it supports reliable and safe operation in critical industrial environments.

Key Features:

• Application: Surge protection for Ex ia intrinsically safe loops

• Connection Type: 2-wire, loop-powered systems

• Mounting Style: DIN rail (35 mm)

• Explosion Protection: Ex ia IIC T6...T4 Ga (zone 0/1/2)

• Functional Safety: SIL2 (per IEC 61508)

• Response Time: Fast clamping for transient suppression

• Voltage Clamping: ≤ 40 V typical

• Current Carrying Capacity: Up to 1 A

• Temperature Range: -40°C to +80°C

• Housing Width: Approx. 6.2 mm for space-saving installations

Technical Specifications:

• Model Number: Z728.H

• Device Type: Surge arrester / protection module

• Rated Voltage: Suitable for standard 4–20 mA signal loops

• Installation Location: Safe area (protects wiring to hazardous area)

• Max Continuous Operating Voltage (UC): ~32 V

• Housing Material: Polyamide

• Dimensions (W x H x D): ~6.2 x 90 x 100 mm

• Weight: Approx. 50 g

Applications:

• Process Automation: Signal protection in analog loop circuits

• Oil & Gas Industry: ATEX zone certified surge protection

• Chemical Plants: Intrinsic safety barrier for instrumentation

• Water Treatment Plants: Protect transmitters and field devices

• Hazardous Area Installations: Maintain loop integrity and safety compliance

Why Choose the Z728.H?

✅ Ex ia certified for use in the highest-risk hazardous zones
✅ SIL2 approval for safety-critical systems
✅ Compact DIN rail design saves control panel space
✅ Reliable surge protection for loop-powered field devices
✅ Part of the trusted Pepperl+Fuchs intrinsic safety portfolio

Order Now:

In stock and ships worldwide. 

NEW product in original sealed packaging. The product may be of older version or design. The packaging may have markings, signs of discoloration, and wear. DDPARTSSOLUTION Warranty: 1 Year. Manufacturer's Warranty and Support NEVER apply