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The device features two-stage protection that comprehensively secures the connected equipment. The first stage is based on protective elements that limit surges appearing between the transmission line and the PE protective conductor, which allows for effective discharge of the interference charge directly to the ground. The second stage consists of precise elements limiting the dangerous differential voltage that may occur between individual transmission lines. Thanks to this, the AXON-RS485 ensures safety in both common and differential modes.
One of the key advantages of the product is its solid metal housing, which acts as a shield, protecting internal circuits against electromagnetic interference. The use of detachable terminal connectors with a 3.5 mm pitch significantly facilitates the installation and potential maintenance of the system – there is no need to unscrew the wires when removing the module. Terminals A and B are used to connect the lines, while the third terminal can act as a signal ground. The product is characterised by very low self-capacitance, which means that the impact on the quality of the transmitted signal is marginal. It is an asymmetrical solution with clearly marked Line input and Equip output. A condition for reliable operation is connection to a functional earthing system.
EAN: 6931240029879 SKU: 931029875
The AXON-RS485 surge protector is a professional device designed for comprehensive surge protection of electronic equipment operating in control and data transmission systems. It is dedicated to work in CCTV industrial television systems where an RS-485 bus or its variants with an operating voltage not exceeding 5V are used. The main task of this module is to protect sensitive electronic devices against the effects of atmospheric discharges and surges induced in transmission lines.
The device features two-stage protection that comprehensively secures the connected equipment. The first stage is based on protective elements that limit surges appearing between the transmission line and the PE protective conductor, which allows for effective discharge of the interference charge directly to the ground. The second stage consists of precise elements limiting the dangerous differential voltage that may occur between individual transmission lines. Thanks to this, the AXON-RS485 ensures safety in both common and differential modes.
One of the key advantages of the product is its solid metal housing, which acts as a shield, protecting internal circuits against electromagnetic interference. The use of detachable terminal connectors with a 3.5 mm pitch significantly facilitates the installation and potential maintenance of the system – there is no need to unscrew the wires when removing the module. Terminals A and B are used to connect the lines, while the third terminal can act as a signal ground. The product is characterised by very low self-capacitance, which means that the impact on the quality of the transmitted signal is marginal. It is an asymmetrical solution with clearly marked Line input and Equip output. A condition for reliable operation is connection to a functional earthing system.
Rated voltage
6 V - Operating voltage at which the device works correctly without activating protective elements
Maximum voltage
10 V - Maximum DC voltage that can occur in the line without damaging the protector
Rated current
0.75 A - Maximum continuous current flowing through the transmission line
Nominal discharge current (line-to-line) [C3]
25 A - 10/1000 µs - Resistance to fast current pulses between wires
Nominal discharge current (line-to-ground) [C2]
5 kA - 8/20 µs - Ability to discharge large charges to ground potential
Protection voltage Up line-to-line
≤ 16 V - 1 kV/µs - Voltage level to which the surge is limited between lines
Protection voltage line-to-ground [C2]
≤ 1000 V - 1.2 kV / 50 µs - Protection level relative to the PE protective conductor
Series line impedance
≤ 2 Ω - Low series resistance ensuring minimal control signal loss
Frequency response
0 MHz ... 1 MHz - Wide frequency range allowing for stable data transmission
Capacitance line-to-line
50 pF - Very low capacitance causing no distortion of digital waveforms
Capacitance line-to-ground
16 pF - Minimal impact on line symmetry relative to ground
Connectors
2x triple detachable screw terminal, wire cross-section up to 1.5 mm², pin pitch 3.5 mm
Housing
Metal, black lacquered, provides full shielding against EMI/RFI interference
Protection parameters
Full compliance with the rigorous PN-EN61643-21 standard for low-voltage surge arresters
Warranty
3 years - Long manufacturer warranty period confirming high quality
Contents
1x AXON-RS485 surge protector
1x User manual
Dimensions, Weight
Product dimensions: 69 x 32 x 20 mm (D x W x H)
Packaging dimensions: 105 x 75 x 50 mm (D x W x H)
Product weight: 70 g
Weight with packaging: 84 g
Specific References