Siemens 3VM1120-3GE42-0AA0 SENTRON MCCB, 4P, 20 A, TM220

Name: 3VM1120-3GE42-0AA0
Brand: Siemens
SKU: 3VM1120-3GE42-0AA0
Availability: LimitedAvailability
Author: Kitting Kira

Specifications

Identification

3VM1120-3GE42-0AA0 — Identification
Parameter	Value
Product designation	Molded case circuit breaker
Brand / range	SENTRON

Ratings

3VM1120-3GE42-0AA0 — Ratings
Parameter	Value
Number of poles	4
Rated operational voltage Ue (AC)	690 V
Rated insulation voltage Ui	800 V
Current at 40 °C	20 A
Current at 45 °C	20 A
Current at 50 °C	20 A
Current at 55 °C	20 A
Current at 60 °C	19 A
Current at 65 °C	19 A
Current at 70 °C	19 A
Switching capacity class	N
Breaking capacity at 240 V	76 kA
Breaking capacity at 415 V	53 kA
Breaking capacity at 440 V	32 kA
Breaking capacity at 500 V	12 kA
Power loss, max.	12 W

Protection & Trip Unit

3VM1120-3GE42-0AA0 — Protection & Trip Unit
Parameter	Value
Overcurrent release (trip unit) type	TM220
Overcurrent protection function	LI
Ground-fault monitoring	Without
Grounding protection function	No

Construction & Connection

3VM1120-3GE42-0AA0 — Construction & Connection
Parameter	Value
Main circuit connection type	nut keeper kit on both ends
Main circuit connector arrangement	Front connection
Protection class (IP), front	IP40

Accessories & Functions

3VM1120-3GE42-0AA0 — Accessories & Functions
Parameter	Value
Undervoltage release	No
Voltage trigger	No
Trip indicator	No
Communication function	No
Measurement function	No
Motor drive option	No
Auxiliary CO contacts	0

Environmental

3VM1120-3GE42-0AA0 — Environmental
Parameter	Value
Operating temperature, max.	70 °C
Operating temperature, min.	-25 °C
Storage temperature, max.	80 °C
Storage temperature, min.	-40 °C

Mechanical

3VM1120-3GE42-0AA0 — Mechanical
Parameter	Value
Mechanical service life (operating cycles), typ.	15 000
Height	130 mm
Width	101.6 mm
Depth	70 mm
Height (in)	5.12 in
Width (in)	4 in
Depth (in)	2.76 in

Product details

The Siemens SENTRON 3VM1120-3GE42-0AA0 is a 4-pole molded case circuit breaker (MCCB) designed for line protection, with a TM220 thermal-magnetic release. It's rated 20 A continuously at 40 °C, and the breaking capacity reaches 76 kA at 240 V, 53 kA at 415 V, 32 kA at 440 V, and 12 kA at 500 V — so it handles high fault currents on the secondary side of a distribution transformer without cascading upstream.

The breaker measures 70 mm deep, 101.6 mm wide, and 130 mm high — a compact 4-pole footprint that fits standard panel-mount cutouts. Front protection is IP40, meaning it's sealed against tools and wires but not washdown; keep it inside the enclosure, not on a gland plate.

Frequently asked questions

How do I get current pricing and availability for 3VM1120-3GE42-0AA0?

Submit an RFQ through this listing. Availability and current pricing are confirmed at quote time through independent distribution channels.

What is the breaking capacity of 3VM1120-3GE42-0AA0 at different voltages?

76 kA at 240 V, 53 kA at 415 V, 32 kA at 440 V, and 12 kA at 500 V — the breaker safely interrupts faults up to those levels depending on line voltage.

What are the physical dimensions of 3VM1120-3GE42-0AA0?

70 mm deep, 101.6 mm wide, and 130 mm high. The 4-pole width fits standard panel cutouts.