Siemens 3VA2040-7JQ42-0AA0 SENTRON MCCB, 40 A, 4-Pole, 330 k

Name: 3VA2040-7JQ42-0AA0
Brand: Siemens
SKU: 3VA2040-7JQ42-0AA0
Availability: LimitedAvailability
Author: RMA Rashid

Specifications

Identification

3VA2040-7JQ42-0AA0 — Identification
Parameter	Value
Product designation	Molded case circuit breaker
Brand / range	SENTRON

Ratings

3VA2040-7JQ42-0AA0 — Ratings
Parameter	Value
Number of poles	4
Rated operational voltage Ue (AC)	690 V
Rated insulation voltage Ui	800 V
Current at 40 °C	40 A
Current at 45 °C	40 A
Current at 50 °C	40 A
Current at 55 °C	40 A
Current at 60 °C	40 A
Current at 65 °C	40 A
Current at 70 °C	40 A
Switching capacity class	C
Breaking capacity at 240 V	330 kA
Breaking capacity at 415 V	242 kA
Breaking capacity at 440 V	242 kA
Breaking capacity at 500 V	187 kA
Breaking capacity at 690 V	3 kA
Power loss, max.	1.2 W

Protection & Trip Unit

3VA2040-7JQ42-0AA0 — Protection & Trip Unit
Parameter	Value
Overcurrent release (trip unit) type	ETU560
Overcurrent protection function	LSIG
Ground-fault monitoring	Summation current formation L + N conductor
Grounding protection function	Yes

Construction & Connection

3VA2040-7JQ42-0AA0 — Construction & Connection
Parameter	Value
Main circuit connection type	on both sides nut keeper kit
Main circuit connector arrangement	Front terminal
Protection class (IP), front	IP40

Accessories & Functions

3VA2040-7JQ42-0AA0 — Accessories & Functions
Parameter	Value
Undervoltage release	No
Voltage trigger	No
Trip indicator	No
Communication function	Yes
Measurement function	No
Motor drive option	Yes
Auxiliary CO contacts	0

Environmental

3VA2040-7JQ42-0AA0 — Environmental
Parameter	Value
Operating temperature, max.	70 °C
Operating temperature, min.	-25 °C
Storage temperature, max.	80 °C
Storage temperature, min.	-40 °C

Mechanical

3VA2040-7JQ42-0AA0 — Mechanical
Parameter	Value
Mechanical service life (operating cycles), typ.	25 000
Height	181 mm
Width	140 mm
Depth	86 mm
Height (in)	7.13 in
Width (in)	5.51 in
Depth (in)	3.39 in

Product details

What this MCCB is and what it does

The Siemens SENTRON 3VA2040-7JQ42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 40 A continuous current, designed for line protection in distribution panels. It carries a 330 kA interrupting capacity at 240 V — that figure drops to 242 kA at 415 V and 440 V, and to 187 kA at 500 V, so the available fault current at your service entrance determines which voltage column you read. At 690 V the rating falls to 3 kA, which means this breaker is not intended for 690 V line-side protection in high-fault installations.

Thermal performance across the panel ambient range

The breaker holds its full 40 A rating from 40 °C through 70 °C ambient without derating — a solid thermal curve for a crowded enclosure where internal temperatures climb. Operating range spans -25 °C to 70 °C; storage limits are -40 °C to 80 °C. The 86 mm depth and 140 mm width fit standard Siemens SENTRON mounting footprints, so it swaps into existing 3VA panel layouts without re-drilling gland plates.

Frequently asked questions

Where can I buy 3VA2040-7JQ42-0AA0 and how do I get a price?

This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time.

What is 3VA2040-7JQ42-0AA0's listed depth on this component line?

The listed depth is 86 mm (3.39 in). Width is 140 mm (5.51 in), height is 181 mm (7.13 in).

Will 3VA2040-7JQ42-0AA0 drop into a panel specified around 3VA2063-8JQ42-0AA0 without rewiring?

Both belong to the same SENTRON 3VA family and share the same mounting footprint, so mechanical fit is the same. The 3VA2063-8JQ42-0AA0 is a higher-current variant (63 A frame), so the 40 A 3VA2040-7JQ42-0AA0 will physically install in the same panel cutout without rewiring, but verify the load and protection coordination — the breaker's continuous rating must match the downstream circuit.