Siemens 3VA1120-4ED12-0AA0 SENTRON MCCB, 20A, 1-Pole, 75.6kA

Name: 3VA1120-4ED12-0AA0
Brand: Siemens
SKU: 3VA1120-4ED12-0AA0
Availability: LimitedAvailability
Author: Spares Sergei

Specifications

Identification

3VA1120-4ED12-0AA0 — Identification
Parameter	Value
Product designation	Molded case circuit breaker
Brand / range	SENTRON

Ratings

3VA1120-4ED12-0AA0 — Ratings
Parameter	Value
Number of poles	1
Rated operational voltage Ue (AC)	415 V
Rated insulation voltage Ui	500 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	S
Breaking capacity at 240 V	75.6 kA
Breaking capacity at 415 V	9 kA
Power loss, max.	4 W

Protection & Trip Unit

3VA1120-4ED12-0AA0 — Protection & Trip Unit
Parameter	Value
Overcurrent release (trip unit) type	TM210
Overcurrent protection function	LI
Ground-fault monitoring	Without
Grounding protection function	No

Construction & Connection

3VA1120-4ED12-0AA0 — Construction & Connection
Parameter	Value
Main circuit connection type	nut keeper kit on both ends
Main circuit connector arrangement	Front terminal
Protection class (IP), front	IP40

Accessories & Functions

3VA1120-4ED12-0AA0 — 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

3VA1120-4ED12-0AA0 — Environmental
Parameter	Value
Operating temperature, max.	70 °C
Operating temperature, min.	-25 °C
Storage temperature, max.	80 °C
Storage temperature, min.	-40 °C

Mechanical

3VA1120-4ED12-0AA0 — Mechanical
Parameter	Value
Mechanical service life (operating cycles), typ.	20 000
Height	130 mm
Width	25.4 mm
Depth	70 mm
Height (in)	5.12 in
Width (in)	1 in
Depth (in)	2.76 in

Product details

The Siemens SENTRON 3VA1120-4ED12-0AA0 is a 1-pole molded case circuit breaker (MCCB) rated 20 A at 40 °C with a TM210 thermal-magnetic overcurrent release. It delivers a 75.6 kA interrupting capacity at 240 V AC and 9 kA at 415 V AC, sized for line protection in distribution panels. The 20 A rating holds flat from 40 °C through 55 °C, then derates to 19 A at 60 °C and above — no need to oversize for typical 40 °C panel ambient. Insulation voltage is 500 V, with operating voltage at 415 V AC or 125 V DC.

Integration & Mounting

The 25.4 mm (1 in) width and 70 mm (2.76 in) depth fit standard 1-pole MCCB slots in Siemens SENTRON distribution panels. Front IP40 protection covers the operator interface; the TM210 release is fixed, no trip indicator or undervoltage release on this variant.

Frequently asked questions

What is the interrupting capacity of 3VA1120-4ED12-0AA0?

75.6 kA at 240 V AC and 9 kA at 415 V AC — sufficient for high-fault panelboard applications.

Where can I buy 3VA1120-4ED12-0AA0?

This part is sourced to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time.