AF-533-03 Yokogawa Alarming Fuse Module

AF-533-03 AF53303 Yokogawa PLC/DCS Alarming Fuse Modules

AF-533-03 AF53303 Yokogawa PLC/DCS Alarming Fuse Modules

Availability: 10 left in stock

Yokogawa AF-533-03 Alarming Fuse Modules Configured for multi-channel circuit protection in Yokogawa control environments, the Yokogawa AF-533-03, also cataloged as...

SKU: AF533-03

Manufacturer: Yokogawa
Product No.: AF533-03
Product Type: Fuse Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 110g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa AF-533-03 Alarming Fuse Modules

Configured for multi-channel circuit protection in Yokogawa control environments, the Yokogawa AF-533-03, also cataloged as the AF53303 Alarming Fuse Module, operates as a dedicated hardware component for fast-acting fuse protection and status monitoring within PLC and DCS power distribution assemblies. The board processes 6 independent 24 VDC circuits to interrupt overcurrent conditions and output immediate alarm state signals.

Hardware Specifications

Parameter	Specification
Model	AF-533-03 (AF53303)
Brand	Yokogawa
Origin	Japan
Weight	0.24 lbs (0.11 kg)
Dimensions	160 mm x 100 mm x 15 mm
Operating Temp	-20 to +70 deg C
Power Consumption	8 mA idle, 25 mA all fuses blown
Channels	6 independent fused channels
Nominal Voltage	24 VDC nominal (150 VDC maximum)
Fuse Rating	2 A standard fast-acting (5 x 20 mm glass)
Maximum Current	5 A DC maximum per channel
Propagation Delay	70 ms (fuse rupture to contact output)
Alarm Outputs	SPDT relay contact (60 VDC / 48 VAC, 0.5 A) + solid-state current sink
Channel Isolation	0.5 kV between fuse circuits and contact output
Status Indication	6 yellow channel LEDs
Connector Type	DIN 41612 Bauform F, 48-pin

Process Control & Channel Isolation Profiles

The alarming fuse module isolates field power distribution branch lines from primary supply buses to protect control system I/O loops against sustained overcurrent faults. Each channel incorporates a 0.5 kV galvanic isolation barrier between field-side fuse loops and internal alarm signaling circuits. Upon fuse rupture, local yellow LED indicators illuminate while a solid-state current sink and SPDT relay switch contacts change state within 70 ms, transferring hardware fault alerts across 4-20 mA HART loop protocol power feeds or central alarm panels without disrupting adjacent power channels.

Frequently Asked Questions

Q: How does the AF-533-03 notify the DCS when a channel fuse ruptures?

A: The board features a 70 ms internal detection circuit that triggers both an SPDT relay contact (60 VDC / 48 VAC, 0.5 A) and a 24 VDC solid-state current sink to immediately transmit alarm status to system monitoring inputs.

Q: Can higher current fuses be installed in the module channels?

A: The module accepts standard 5 x 20 mm glass fuses up to a maximum continuous rating of 5 A DC per channel, provided total board power dissipation remains within thermal design limits.

Field Installation Guidelines

First, align the single Euro format card edge with the subrack guide rails and insert the board firmly into the DIN 41612 48-pin backplane receptacle until fully seated.

Next, verify field branch wiring using properly rated conductors. Ensure that high-power distribution lines and signal conductors are separated in cabinet wire ducts by at least 200 mm to suppress inductive noise coupling. Connect field supply return lines to a single cabinet ground point on the main earthing bar to prevent ground potential loops.

Finally, confirm all channel fuses are seated securely in their holders before energizing the 24 VDC supply, and ensure top and bottom rack clearances remain unobstructed to facilitate natural convective thermal dissipation.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.