Data / Signal Systems > Data/Signal Lines Protection
SMH2-20 Series
Category IEC/EN: D1/C1/C2/C3
Coarse protection: 3 terminal GDT
Nominal operating voltage: Un:230, 24, 60VDC
Max.operating voltage: Uc:320, 28, 64VDC
Frequency range: Upto 10MHz
Surge Discharge Ratings: In:10kA, Imax:20kA, limp:5kA
Series load current: 145mA (5A for 230V version)
Safety: PTC I > 0.3A(24 and 60V versions)
Enclosure: DIN 43880 2/3TE, DIN rail mount
Terminals: Stranded to 4 mm²
Housing: Modular design
Complies with: IEC/EN 61643‐21

The SMH2-20 series of low voltage protective devices has been developed as a generic protector for low voltage application and provides both common(longttudinal) mode and differential(transverse) mode protection.
Coarse protection is provided using a three terminal gas discharge tube while fine protection is provided using a high speed silicon or metal oxide varistor stage.
Overcurrent protection is provided using a PTC element, which provides a level of protection against short circuit fault conditions. If the module is unplugged out of the base, the connection lines remain enabled
IM-TD Series
Category lEC/EN: D1/C1/C2/C3
Mode of protection: Longitudinal, Transverse
Coarse protection: 3 terminal GDT
Available voltages: 5,12′15′24′30′48′60′110VDC
Frequencv range: 0.6 - 10MHz
Surge Discharge Ratings: In:10kA, Imax:20kA, limp:2.5kA
Series load current: 145mA(1A for 110V version)
Safety: lnternal thermal runaway disconnector
Indication: 2 x end-of‐life status flag
Enclosure: DIN 43880 1TE, DIN rail mount
Terminals: Stranded to 6 mm²
Housing: Modular design
Complies with: IEC/EN 61643‐21

The lM-TD series of surge protective devices has been developed to protect against the effects of induced voltages onto data, signal and communication circuits. lt consists of a multi-stage protector providing both common (longitudinal) mode and differential(transverse) mode protection.
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