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Type: 3120-N

Description

The 3120 thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120 is ideally suited for overload protection of motors, pumps, transformers and cables. After tripping, it can reliably, easily and quickly be reset. The positively trip-free mechanism ensures reliable disconnection of the circuit even with the actuator blocked.

Versions upon request:

  • ON/OFF switch without overcurrent protection according to the relevant standard for switches for appliances IEC/EN 61058
  • thermal-magnetic version for an additional short circuit protection

Your benefits

  • Unrivalled uptime of machinery and devices due to sealing of rocker and mounting cut-out
  • Ease of actuation thanks to a freely accessible rocker
  • Eco-friendly because it does not contain any noxious plasticisers

Technical Data

Voltage rating
  • AC 240 V (upon request)
  • DC 50 V
Current ratings from 0.1A until 20A  
(up to 30 A to special order, single pole only)
Number of poles single pole
double pole
Mounting method flange
Terminal design blade terminals
screw terminals
Actuation push button
rocker
Auxiliary contacts with auxiliary contacts
without auxiliary contacts
Water splash protection with water splash protection
without water splash protection
Illumination with illumination
without illumination
Typical life single pole
AC 240 V:
0,1...20 A 30 000 operations at 1 x IN, inductive

DC 50 V:
0,1...4 A 30 000 operations at 1 x IN, inductive
4,5...16 A 30 000 operations at 1 x IN, resistive

DC 28 V:
0,1...20 A 30 000 operations at 1 x IN, inductive

double pole
AC 240 V:
0,1...16 A 50 000 operations at 1 x IN, inductive
17...20 A 30 000 operations at 1 x IN, inductive

DC 50 V:
0,1...16 A 50 000 operations at 1 x IN, inductive
17...20 A 10 000 operations at 1 x IN, inductive
Interrupting capacity Icn (IEC/EN 60934)
1, 2-pole: IN 0,1 ... 2 A, UN AC 240 V / DC 50 V, Icn 10 x IN
1-pole: IN 2,5 ... 10 A, UN DC 50 V, Icn 50 A
1-pole: IN 2,5 ... 20 A, UN AC 240 V / DC 28 V, Icn 200 A
2-pole: IN 2,5 ... 20 A, UN DC 50 V, Icn 250 A
2-pole: IN 2,5 ... 20 A, UN AC 240 V / DC 28 V, Icn 300 A
Certificates VDE, UL, CSA, CCC, KC

Accessories

Accessories

Order number Description
Y 312 140 01 plug-in connector
Y 304 275 01 water splash cover black
Y 303 862 01 terminal adapter
Y 303 068 01 insulated cover
Y 303 675 01 spacer for -F3...
panel thickness < 2 mm
Y 303 675 02 spacer for -F3...
panel thickness < 4 mm
Y 303 676 01 spacer for -F5...
Y 303 885 31 blanking piece

Applications

Applications

  • Apparate- und Automatenbau
  • Household, Hobby & Garden Equipment
  • Medical Equipment