Siemens SENTRON 3VA2040-7KP42-0AA0 MCCB, 40 A, 4-Pole, 240 V

Name: 3VA2040-7KP42-0AA0
Brand: Siemens
SKU: 3VA2040-7KP42-0AA0
Availability: LimitedAvailability
Author: Mobile-Repair Mona

Specifications

Identification

3VA2040-7KP42-0AA0 — Identification
Parameter	Value
Product designation	Molded case circuit breaker
Brand / range	SENTRON

Ratings

3VA2040-7KP42-0AA0 — 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

3VA2040-7KP42-0AA0 — Protection & Trip Unit
Parameter	Value
Overcurrent release (trip unit) type	ETU850
Overcurrent protection function	LSI
Ground-fault monitoring	Without
Grounding protection function	No

Construction & Connection

3VA2040-7KP42-0AA0 — 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

3VA2040-7KP42-0AA0 — Accessories & Functions
Parameter	Value
Undervoltage release	No
Voltage trigger	No
Trip indicator	No
Communication function	Yes
Measurement function	Yes
Motor drive option	Yes
Auxiliary CO contacts	0

Environmental

3VA2040-7KP42-0AA0 — Environmental
Parameter	Value
Operating temperature, max.	70 °C
Operating temperature, min.	-25 °C
Storage temperature, max.	80 °C
Storage temperature, min.	-40 °C

Mechanical

3VA2040-7KP42-0AA0 — 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 the ratings mean for fit

The 3VA2040-7KP42-0AA0: The 40 A continuous rating holds flat across the whole ambient range from 40 °C up to 70 °C — no derating needed if the panel runs hot. The 330 kA at 240 V (242 kA at 415 V, 187 kA at 500 V, and 3 kA at 690 V) tells you this breaker can interrupt a massive fault without blowing apart, which is what you need for a main or feeder position in a high-capacity distribution board. The 800 V rated insulation voltage means it's comfortable on 480 V or 600 V systems. The 86 mm depth and 140 mm width fit a standard 4-pole MCCB footprint on a DIN rail or panel-mount base. The IP40 front protection means it's fine inside a closed panel but not for washdown areas — keep it behind a gland plate.

Frequently asked questions

Where can I buy 3VA2040-7KP42-0AA0 and how do I get a price?

This part is available to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time.

Will 3VA2040-7KP42-0AA0 drop into a panel specified around 3VA2040-8HN42-0AA0 without rewiring?

Both share the same SENTRON 3VA frame and footprint, so the physical fit and wiring connections are identical — the difference is the trip unit variant, so verify the trip curve matches your coordination study before substituting.