Apollo XP95 Dual Channel DIN-Rail Isolator
£40.23 (inc VAT: £48.28)
Summary
The XP95 DIN-Rail Dual Isolator provides two independent isolators in a single housing, designed to sense and isolate short-circuits on XP95 loops and spurs. Each isolator channel operates completely independently, ensuring maximum system reliability and fault containment.
Compatible with Apollo Series 90, XP95, and Discovery protocols, the device is loop-powered and polarity sensitive. When a short-circuit or abnormally low impedance occurs, the isolator automatically senses the voltage drop and isolates the negative supply in the direction of the fault. The affected channel’s yellow LED illuminates to provide visual confirmation, and the isolated section is tested every five seconds using a current pulse. Once the fault is cleared, power is automatically restored without manual intervention.
The unit mounts on standard 35mm DIN rail or can be fixed directly to an enclosure, with plug-in terminal blocks accepting wires up to 2.5mm². This compact design allows for flexible installation whilst maintaining full functionality across both channels.
Features
- Two independent isolator channels in single housing
- Loop-powered operation with polarity sensitivity
- Yellow LED indication for each channel during isolation conditions
- Compatible with Apollo Series 90, XP95 and Discovery protocols
- Maximum of 20 XP95 detectors between isolators
- Automatic fault detection and isolation in 20µS
- Isolated section tested every five seconds with current pulse
- Automatic power restoration when short-circuit is removed
- Standard 35mm DIN rail mounting (DIN 46277)
- Alternative direct enclosure mounting with 4mm screws
- Plug-in terminal blocks accepting wires up to 2.5mm²
- Compact dimensions: 110 x 107 x 20mm, weighing 90g
- Low current consumption: 27µA at 18V, 47µA at 28V
- CE marked with EMC compliance
- Wide operating temperature range: -20°C to +60°C
FAQ
How many detectors can be installed between isolators?
A maximum of twenty XP95 detectors may be installed between isolators to ensure proper system protection and fault isolation.
What happens when a short-circuit occurs?
When a short-circuit or abnormally low impedance occurs across the loop, the isolator senses the fall in voltage and isolates the negative supply in the direction of the fault. The yellow LED on the affected channel illuminates to indicate the isolation condition. The isolated section is tested every five seconds using a current pulse, and when the short-circuit is removed, power is automatically restored.
Are the two isolator channels interconnected?
No, the two isolator channels are not interconnected internally and operate completely independently of one another. Each channel can isolate faults on its respective circuit without affecting the other channel.
Which fire alarm protocols is this isolator compatible with?
The DIN-Rail Dual Isolator is compatible with systems using Apollo Series 90, XP95, or Discovery protocols, providing flexible integration options for various fire detection systems.
How is the isolator mounted?
The isolator can be clipped onto a standard 35mm DIN rail (DIN 46277) or fixed directly to an enclosure using two 4mm screws. Connections are made via plug-in terminal blocks which accept wires up to 2.5mm².
What is the operating temperature range?
The isolator operates in temperatures ranging from -20°C to +60°C, with a storage temperature range of -30°C to +80°C. It is designed for indoor use only in relative humidity conditions of 0% to 95% without condensation or icing.
Does the isolator require external power?
No, the isolator is loop-powered, drawing its operating power from the fire alarm loop itself. It has very low current consumption of just 27µA at 18V and 47µA at 28V under normal conditions.
Specififcations
- Part Number: 55000-802
- Maximum Supply Voltage: 30V DC + 9V protocol pulses
- Volt Drop At 50mA: 10mV
- Volt Drop At 500mA: 100mV
- Switch-on Voltage: Input 17.5V, output 15V
- Switch-on Time: 30mS (to step), 2kΩ load at 18V
- Isolation Time: 20µS, 2Ω load at 28V
- Isolating Voltage: 14V DC
- Isolation Indicator: Yellow LED, lit continuously in isolation condition
- Current Consumption At 18V: 27µA
- Current Consumption At 28V: 47µA
- Current Consumption At 18V With Adjacent Sector Isolated: 4mA
- Maximum Line Current Non-isolating Continuous: 1.0A
- Maximum Line Current Transition Into Isolation: 3.0A
- On Resistance: 0.2Ω
- Reset Resistance At 18V: 300Ω (with short after next isolator)
- EMC Emission: To BS EN 50081-1
- EMC Immunity: To BS EN 50130-4
- Operating Temperature: -20°C to +60°C
- Storage Temperature: -30°C to +80°C
- Relative Humidity: 0%-95% (no condensation/icing)
- Design Environment: Indoor use only
- Certification: CE marked
- Mounting: Standard 35mm DIN rail (DIN 46277) or direct fixing with 4mm screws
- Terminal Type: Plug-in terminal blocks
- Wire Size: Up to 2.5mm²
- Dimensions: 110 x 107 x 20mm
- Weight: 90g
- Number Of Channels: 2 (independent)
- Maximum Detectors Between Isolators: 20 XP95 detectors
- Protocol Compatibility: Apollo Series 90, XP95, Discovery
Downloads
- Datasheet (Adobe PDF)
Additional information
| Weight | 1 kg |
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