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Siemens 4EP3805-4BK00 — Line/Load Reactors

Siemens 4EP3805-4BK00 Commutating Choke, 55.8A, 0.19mH

MPN4EP3805-4BK00

Siemens 4EP3805-4BK00 commutating choke for converter, 3-phase, 400V AC, 55.8A rated / 62A max, 0.19mH, IP00, screw terminals.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

4EP3805-4BK00 specifications
ParameterValue
Type of voltageAC
Type of electrical connection for main current circuitscrew-type terminals
Operating voltage rated value400V
Relative inductive drop in voltage on the measurement level current, voltage and frequency1.6%
Operating frequency rated value0 ... 50Hz
Phase number3
Ambient temperature rated value40°C
Depth0.12m
Width0.178m
Height0.153m
Thermal class acc. to IEC 60085B
Rated value55.8A
Protection class IPIP00
Inductivity rated value0.00019H

Product details

It limits current rise during commutation, reducing harmonic distortion and protecting the converter's semiconductors from di/dt stress. Rated for 400 V AC, 50 Hz line frequency, it carries a continuous rated current of 55.8 A with a thermal maximum of 62 A — sized for a drive output in that current class, not a motor FLA match. The 0.19 mH inductance and 1.6 % relative voltage drop at rated current are the key numbers for sizing: this choke is meant to work with a specific converter, not as a generic input reactor.

The 55.8 A rated current (62 A max) is the continuous thermal rating at 40 °C ambient, thermal class B per IEC 60085 — that's an 80 °C temperature rise limit. If your cabinet ambient runs hotter, you derate. The 0.19 mH inductance at 50 Hz gives a 1.6 % voltage drop at rated current, which is a relatively low impedance; this choke smooths commutation notches without dropping much line voltage under load. The IP00 enclosure means it's an open-frame component — no finger protection, no drip shield. Mount it inside a cabinet, not on the wall. Screw terminals for the main circuit accept standard lug connections.

Physical integration

Footprint: 0.178 m wide × 0.153 m tall × 0.12 m deep. That's about 7 × 6 × 4.7 inches. It's a panel-mount component, not DIN-rail clip-on. Plan for screw-terminal access on the main circuit connections. The IP00 rating means it needs enclosure protection from the panel builder — no exposed live parts allowed in a touch-safe cabinet.

Frequently asked questions

What are the key electrical ratings for 4EP3805-4BK00?

3-phase, 400 V AC, 50 Hz. Rated current 55.8 A, maximum 62 A. Inductance 0.19 mH, relative voltage drop 1.6% at rated current. Thermal class B at 40 °C ambient.

Where can I buy 4EP3805-4BK00 and get current pricing?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.

What are the physical dimensions of 4EP3805-4BK00?

Width 0.178 m, height 0.153 m, depth 0.12 m. It is an open-frame (IP00) panel-mount component with screw terminals.

MPN
4EP3805-4BK00