The Apollo 55000-440APO is an XP95 I.S. analog addressable heat detector, class A2S, for hazardous areas, and it must be connected to the loop through a safety barrier. Its single thermistor makes it a good fit where the air is normally dirty or smoky. JEM Systems Canada supplies it with shipping across Canada.
Specifications
| Part number |
55000-440APO |
| Range |
XP95 I.S., native XP95 protocol, compatible with Discovery |
| Classification |
A2S |
| Sensor |
Single NTC thermistor, continuous sampling |
| Detection principle |
Linear approximation from 25 °C to 90 °C, 1 °C per count |
| Supply voltage |
14 to 22 VDC, two-wire, polarity sensitive |
| Quiescent current |
150 µA |
| Power-up surge |
1 mA for 0.3 s; maximum power-up time 4 s |
| Alarm indicator |
Red LED, 700 µA; remote LED current 500 µA (internally limited) |
| Terminals |
L1 positive supply; L2 negative supply and remote LED negative; +R remote LED positive |
| Hazardous area classification |
Ex ia IIC T4 Ga and Ex ia IIC T5 Ga (ambient up to +60 °C) |
| Certificates |
BASEEFA BAS02ATEX1289X; IECEx BAS12.0091X |
| Operating temperature |
-20 °C to +45 °C (T5); -20 °C to +60 °C (T4) |
| Storage temperature |
-30 °C to +80 °C |
| Humidity |
0 to 95% RH |
| IP rating |
IP44 |
| Dimensions |
100 mm diameter x 42 mm height |
| Weight |
105 g |
| Material |
White flame-retardant polycarbonate housing; nickel-plated stainless steel terminals |
Compatibility and installation notes
- A safety barrier is a mandatory part of an I.S. system. Apollo states a typical I.S. circuit carries up to 20 detectors (12 optical detectors in an IIC environment), depending on barrier type, devices fitted and how many detector LEDs the control panel lets illuminate at once.
- The remote LED is wired in series with the integral LED and cannot be controlled separately from it, as it can on standard XP95 detectors.
- A remote LED indicator and its terminations need at least IP20 protection and segregation from other circuits per BS EN 60079-14.
- Intended for hazardous areas, dusty environments, refineries and offshore platforms.
Related models
-
Apollo 53832-070APO MiniDisc Remote Indicator, named by Apollo as a suitable remote indicator for this detector
Documents
Specifications from Apollo datasheet PP5029/2026 Issue 4. Manufacturer specifications are subject to change.
