Power class: 1.6 A to 7.5 A
Series: Z1

  • normally closed
  • resets automatically
  • defined as current sensitive
  • with or without epoxy
  • with connector cables
  • Mylar®-Nomex®
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Thermal protectors SZ1Thermal protectors SZ1

Technical specifications

Nominal switching temperature (NST) in 5 °C 70 °C - 160 °C
Tolerance (standard) ±5 K
Reverse switch temperature (RST) below NST UL ≥ 35° C
Reverse switch temperature (RST) below NST VDE ≥ 35 °C
Installation height from 4.9 mm
Diameter 9.5 mm
Length of the insulation cap 18.0 mm
Resistance to impregnation suitable
Series resistor for setting the current sensitivity from 0.12 Ω to 70.0 Ω
Suitable for installation in protection class I + II
Standard connectionLead wire 0.25 mm² / AWG22
Operational voltage range AC/DCup until 500 V AC / 14 V DC
Rated voltage AC250V (VDE) 277V (UL)
Rated current AC cos ϕ = 1.0/cycles2.0 A / 3,000
Rated current AC cos ϕ = 0.6/cycles1.6 A / 3,000
Max. switching current AC/cycles4.0 A / 3,000
Rated voltage DC12 V
High voltage resistance2.0 kV
Max. switching current DC/cycleson request
Total bounce time< 1 ms
Contact resistance (according to MIL-STD. R5757)≤ 50 mΩ
Vibration resistance at 10 ... 60 Hz100 m/s²


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