Item No.: MSSTB002
Product Name: STB module with protection

The STB module provides a connection point between an exchange-side cable pair and a distribution pair. It incorporates a 5-point plug in module to provide continuity and a range of other options. Removal of the plug-in module does not disturb wire connections but makes contacts to them available for testing of both sides of the network.
1. Outdoor connections where the environmental conditions are extremely aggressive, No special tool required, only by standard screw driver
2. Terminations where user development characteristics require future flexibility in terms of the type of protection or filtering capabilities.
Current conducting capacity: 20 A, 10 A per conductor for 10 minutes at least, without causing deformation to the module(if >20A up to 30A is required. This is possible using s different GDT)
Insulation resistance:
Dry atmosphere: >1010 Ω ; Damp atmosphere(ASTM D618, procedure F): >1010 Ω ; Salt fog: (ASTM B117) >109 Ω
Immersion in water: (15 days in 3% NaCl solution) TELCORDIA TR-NWT-000975 (Formerly Bellcore )>109 Ω
Contact resistance: R material + R bridge contacts + R wire contacts < 10 m Ω
Increase in contact resistance: After climatic tests: < 2.5 m Ω ; After 50 reinsertions: < 2.5 m Ω
Dielectric strength: >3, 000 Vdc for 1 minute
Mechanical characteristics:
Protector ground contact: Tinned hard brass; Continuity contact: Tinned hard brass
Plug-in module body: Flame retardant (UL94) fiber-glass reinforced polycarbonate
Plug-in module sealant: Gel; "O" ring": EPDM
Internal Configuration: Continuity(AS_STB); 260 V GDT; 230 V GDT(AS-STB-P);
0.68 μ F/22 kOhm; Medium wave: 300 to 1600 kHz
Dimension: (mm) (W x D x H) x: 50 x 20 x40 (with Protection)
Environment condition: 5-40 degree Celsius, Relative humidity < 85% (+30 degree Celsius), Atmospheric pressure: 70-106KPa
Pulling-out force: Tin bronze and silver plating (20 uinch), pulling-out force not less than 25N
The performance of anti-burn: PBT or anti-burn PC, Combustibility achieved GB/T 5169.7-1985 standard
Type: 1) without Protection: DIN rail drop wire connector with continuity plug. The plug is grey in colour and has only the function of electrically connecting the incoming pair with the outgoing one. 2) with Protection: DIN rail drop wire connector with 3-point protection: It differs from previous one by having a RED plug, which, beside providing continuity, also integrates a 3-pole gas arrestor (GDT), rated 230V, 5A/5kA
Life: Durability 200 cycles (0.4-0.6 diameter), durability 50 cycles (0.6-1.2 diameter)
Testing-general(Electrical\Mechanical\Environmental and so on): According to industry standard