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 I_N, inductive DC 50 V: 0,1...4 A 30 000 operations at 1 x I_N, inductive 4,5...16 A 30 000 operations at 1 x I_N, resistive DC 28 V: 0,1...20 A 30 000 operations at 1 x I_N, inductive double pole AC 240 V: 0,1...16 A 50 000 operations at 1 x I_N, inductive 17...20 A 30 000 operations at 1 x I_N, inductive DC 50 V: 0,1...16 A 50 000 operations at 1 x I_N, inductive 17...20 A 10 000 operations at 1 x I_N, inductive
Interrupting capacity I_cn	(IEC/EN 60934) 1, 2-pole: I_N 0,1 ... 2 A, U_N AC 240 V / DC 50 V, I_cn 10 x I_N 1-pole: I_N 2,5 ... 10 A, U_N DC 50 V, I_cn 50 A 1-pole: I_N 2,5 ... 20 A, U_N AC 240 V / DC 28 V, I_cn 200 A 2-pole: I_N 2,5 ... 20 A, U_N DC 50 V, I_cn 250 A 2-pole: I_N 2,5 ... 20 A, U_N AC 240 V / DC 28 V, I_cn 300 A
Certificates	VDE, UL, CSA, CCC, KC

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