Siemens 3VA1225-5EF42-0KC0 SENTRON MCCB, 250A, 4-Pole, 187kA

Name: 3VA1225-5EF42-0KC0
Brand: Siemens
SKU: 3VA1225-5EF42-0KC0
Availability: LimitedAvailability
Author: Broker Bao

Specifications

Identification

3VA1225-5EF42-0KC0 — Identification
Parameter	Value
Product designation	Molded case circuit breaker
Brand / range	SENTRON
Basic switch (supplied) ref.	3VA12255EF420AA0
Integrated auxiliary / alarm switch ref.	3VA9988-0AA12

Ratings

3VA1225-5EF42-0KC0 — Ratings
Parameter	Value
Number of poles	4
Rated operational voltage Ue (AC)	690 V
Rated insulation voltage Ui	800 V
Current at 40 °C	250 A
Current at 45 °C	250 A
Current at 50 °C	250 A
Current at 55 °C	243 A
Current at 60 °C	237 A
Current at 65 °C	230 A
Current at 70 °C	223 A
Switching capacity class	M
Breaking capacity at 240 V	187 kA
Breaking capacity at 415 V	121 kA
Breaking capacity at 440 V	75.6 kA
Breaking capacity at 500 V	30 kA
Breaking capacity at 690 V	17 kA
Power loss, max.	57 W

Protection & Trip Unit

3VA1225-5EF42-0KC0 — Protection & Trip Unit
Parameter	Value
Overcurrent release (trip unit) type	TM240
Overcurrent protection function	LI
Ground-fault monitoring	Without
Grounding protection function	No

Construction & Connection

3VA1225-5EF42-0KC0 — 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

3VA1225-5EF42-0KC0 — Accessories & Functions
Parameter	Value
Undervoltage release	No
Voltage trigger	Yes
Trip indicator	No
Communication function	No
Measurement function	No
Motor drive option	Yes
Auxiliary CO contacts	2

Environmental

3VA1225-5EF42-0KC0 — Environmental
Parameter	Value
Operating temperature, max.	70 °C
Operating temperature, min.	-25 °C
Storage temperature, max.	80 °C
Storage temperature, min.	-40 °C

Mechanical

3VA1225-5EF42-0KC0 — Mechanical
Parameter	Value
Mechanical service life (operating cycles), typ.	20 000
Height	158 mm
Width	140 mm
Depth	70 mm
Height (in)	6.22 in
Width (in)	5.51 in
Depth (in)	2.76 in

Product details

MCCB with line protection focus

The Siemens SENTRON 3VA1225-5EF42-0KC0 is a 4-pole molded case circuit breaker rated 250 A at 40 °C, designed for line protection in distribution panels. Its interrupting capacity reaches 187 kA at 240 V and 121 kA at 415 V, meaning it can safely clear high-fault currents without upstream coordination failure — critical for main breaker or large feeder applications where available fault current is high.

Thermal derating and power loss

The breaker holds 250 A continuously up to 50 °C ambient; above that it derates to 243 A at 55 °C and 223 A at 70 °C. Maximum power loss is 57 W — a factor for enclosure heat rise calculations when multiple breakers are ganged in a panel.

Auxiliary and shunt trip options

Factory-fitted with 2 auxiliary switches (HQ type) and a shunt trip release (STL) for remote tripping. No undervoltage release or ground-fault monitoring on this variant — those are separate order-code options. The auxiliary switches provide status feedback to a PLC or alarm panel.

Frequently asked questions

What are the key interrupting ratings for 3VA1225-5EF42-0KC0?

187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, 30 kA at 500 V, and 17 kA at 690 V.

Where can I buy 3VA1225-5EF42-0KC0 and how is it quoted?

Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing confirmed at quote time.