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HomeProductsRelaysContactors (Electromechanical)LCE01C604480A
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LCE01C604480A - Siemens

Manufacturer Part Number
LCE01C604480A
Manufacturer
Siemens
Allelco Part Number
98D-LCE01C604480A
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
44,039 pcs available, New & Original
Parts Description
CONTACTOR,LTG,EH,N1,30A,6NC,4NO,
Package
Box
Data sheet
LCE01C604480A.pdf

Datasheets

LCE01C604480A.pdf
RoHs Status
 
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Specifications

LCE01C604480A Tech Specifications
Siemens - LCE01C604480A technical specifications, attributes, parameters and parts with similar specifications to Siemens - LCE01C604480A

Product Attribute Attribute Value
Manufacturer Siemens
Termination Style Screw Terminal
Switching Voltage 600VAC - Max
Series -
Package Box
Operating Temperature -25°C ~ 40°C
Must Release Voltage -
Must Operate Voltage -
Product Attribute Attribute Value
Mounting Type Chassis Mount
Features Auxiliary Contacts
Contact Rating (Current) 30 A
Contact Material -
Contact Form 10PST-4NO/6NC (4 Form A, 6 Form B)
Coil Voltage 460 ~ 480VAC
Coil Resistance -
Coil Power 248VA

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status RoHS non-compliant
Moisture Sensitivity Level (MSL) Not Applicable
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8536.49.0065

Frequently Asked Questions(FAQ)

What load switching capacity should I plan for when designing a control circuit around the LCE01C604480A contactor?
The LCE01C604480A is rated for 30 A continuous switching at up to 600 VAC maximum, which establishes the upper boundary for motor and resistive load control in industrial applications. This 30 A rating applies across the four normally-open (Form A) contacts and six normally-closed (Form B) contacts, though designers must account for inductive load derating in practice. At typical motor starting conditions, the LCE01C604480A's contact current-carrying capacity remains valid at rated voltage, but transient inrush currents during motor soft-start or hard-start sequences may briefly exceed 30 A; supplementary current-limiting measures or starter duty ratings should be evaluated if peak inrush protection is required. For resistive or heater loads, the 30 A specification of the LCE01C604480A translates directly to approximately 18 kW at 480 VAC, though thermal margin should be reserved for ambient temperature variation within the -25°C to 40°C operating window.
How does the 460–480 VAC coil voltage specification of the LCE01C604480A affect selection in North American industrial facilities?
The LCE01C604480A coil voltage range of 460–480 VAC aligns with standard three-phase industrial distribution in North America, where nominal bus voltage is 480 VAC, and phase-to-neutral or control transformer secondary voltages typically fall between 460 and 480 VAC. This specification means the LCE01C604480A will reliably energize across typical utility voltage variation without requiring a dedicated step-down transformer or voltage regulator in most industrial environments. However, if the control system operates from a different voltage source—such as 240 VAC or 120 VAC—an external control transformer is necessary; the LCE01C604480A itself provides no internal voltage conversion. In facilities with weak utility feeds or extended cable runs from the main panel to the contactor, voltage sag during switching transients may occur; verifying that the LCE01C604480A coil receives at least 85% of nominal (approximately 390 VAC at the low end) ensures reliable pickup and prevents chattering or dropout during load application.
What is the practical difference between the four normally-open and six normally-closed contact arrangements in the LCE01C604480A for multi-stage motor control?
The LCE01C604480A provides 10 poles of switching capacity configured as 4 NO (normally-open) and 6 NC (normally-closed) contacts, enabling simultaneous control and interlock functions without requiring multiple relays. The four normally-open contacts of the LCE01C604480A are used for load energization—for example, connecting three phases of a motor to the line and one contact for pilot duty or alarm signaling. The six normally-closed contacts allow parallel interlocking, fault signaling, and redundant safety circuits; for instance, two NC contacts of the LCE01C604480A can be wired in series to prevent simultaneous operation of two conflicting circuits, while the remaining NC contacts provide status feedback to a PLC or protection relay. This mixed-pole architecture of the LCE01C604480A reduces panel wiring complexity and eliminates the need for separate interlock relays in many applications, though designers must verify that the total current through all contacts—both NO and NC—does not exceed the 30 A rating when summed across simultaneous switching events.
How should I compare the LCE01C604480A against a similarly rated three-phase contactor with only 3 NO contacts and 1 NC contact?
A standard three-phase contactor with 3 NO contacts and 1 NC contact is optimized for simple motor starting—connecting three power phases and providing one interlock status output—whereas the LCE01C604480A, with its 4 NO and 6 NC configuration, provides four times the normally-open switching poles and six times the normally-closed interlock capacity. This architectural difference means the LCE01C604480A can simultaneously control multiple independent circuits, provide dual-channel safety interlocks, and generate rich diagnostic status signals without auxiliary relay modules. The trade-off is that the LCE01C604480A occupies a larger chassis-mount footprint and draws 248 VA coil power compared to typical three-phase units drawing 100–150 VA; however, for systems requiring integrated interlock, auxiliary control, and fault signaling, the LCE01C604480A eliminates the cost and panel space of two to four external logic relays, making it cost-competitive despite higher base-unit power consumption.
What thermal management considerations apply to the LCE01C604480A when operating continuously at maximum current in ambient temperatures near 40°C?
The LCE01C604480A is specified for operation across -25°C to 40°C ambient temperature, and continuous operation at 30 A near the 40°C upper limit creates a cumulative thermal stress. Contact resistance and coil dissipation both increase with temperature; under continuous 30 A loading at 40°C ambient, the internal contact resistance of the LCE01C604480A generates resistive heating that can raise contact temperature 20–30°C above ambient, potentially approaching 70°C. This temperature rise accelerates contact degradation and arcing during switching transients. For applications requiring sustained 30 A operation in warm environments, ventilation around the LCE01C604480A mounting location should be ensured, and duty-cycle or thermal imaging assessment is recommended to confirm contact temperature remains below manufacturer limits (typically 85–90°C for silver-cadmium or silver-alloy contacts). If continuous operation near 30 A and high ambient temperature are simultaneously required, a derating calculation—reducing the effective current rating by 10–15%—provides design margin and extends contact life of the LCE01C604480A.
Does the LCE01C604480A support direct switching of capacitor banks or only motor loads, and what arc suppression is required?
The LCE01C604480A is designed for inductive loads (motors and transformers) and resistive loads (heaters); direct switching of capacitor banks introduces high inrush current and transient voltage stress that can damage the contacts of the LCE01C604480A within a few cycles. Capacitor discharge generates rapid dv/dt transients that accelerate contact erosion and can cause contact welding or severe pitting. If the LCE01C604480A must control capacitor bank energization or de-energization, external RC snubber networks or pre-insertion resistor modules must be installed across the load terminals to limit inrush current and reduce transient voltage stress. Additionally, varistor or surge suppression modules rated for the 600 VAC switching voltage limit of the LCE01C604480A should be placed close to the contactor coil to protect against back-EMF transients from inductive loads. Without such protection, capacitor switching life of the LCE01C604480A may degrade to fewer than 5,000 operations; with proper arc suppression, motor-duty life typically exceeds 100,000 cycles.
How do I verify that the LCE01C604480A will not drop out if the control voltage sags during a fault or transient disturbance?
The LCE01C604480A does not publish a published "must-operate" voltage specification, which means dropout risk during voltage sag must be evaluated against the coil design and the contactor's mechanical hold-in mechanism. Typical electromagnets in industrial contactors hold pickup at 85% of nominal voltage (approximately 390 VAC for the LCE01C604480A nominal 460–480 VAC range) and remain sealed-in even at 70% nominal voltage due to residual flux and mechanical latching. However, utility transients, inrush current on a weak feeder, or capacitor switching can produce voltage sags of 15–25% that may cause chattering or dropout of the LCE01C604480A. To mitigate this, measure the actual control voltage at the LCE01C604480A coil terminals under worst-case conditions (maximum facility load, longest cable run from transformer), and if voltage drops below 380 VAC, install a small uninterruptible power supply (UPS) module or capacitive hold-up circuit across the coil to bridge sag events. Alternatively, specify a lower-voltage coil version of the LCE01C604480A (if available) or accept higher hold-in current as a design trade-off.
What is the expected maintenance interval and contact replacement procedure for the LCE01C604480A in a continuous-duty industrial application?
The LCE01C604480A, with its 30 A rating and mixed 4 NO / 6 NC contact configuration, typically requires contact inspection or replacement every 3–5 years in continuous industrial duty (assuming ~10–20 switching cycles per day and moderate load type). Contact erosion is not linear; early years show minimal wear, but after 50,000–100,000 switching cycles, contact surface pitting and resistance rise become visible, leading to increased dropout risk and heating. For the LCE01C604480A, field replacement involves: (1) de-energizing the coil, (2) verifying zero voltage with a meter, (3) removing the terminal block or screw-terminal connections, and (4) unbolting the contact bridge assembly from the armature stack. Siemens contactor contact kits are typically plug-in assemblies that snap into the LCE01C604480A frame, requiring no welding or specialized tools. If contact erosion is detected during inspection, replacing the LCE01C604480A contacts at 50,000 cycles prevents arcing incidents and restores voltage-switching margin; however, if corrosion or welding is observed, replacement of the entire LCE01C604480A unit is recommended because damage to the armature or coil cannot be reliably repaired in the field.
Is the LCE01C604480A suitable for use in food processing or pharmaceutical manufacturing environments where moisture and washdown occur?
The LCE01C604480A is classified as RoHS non-compliant and carries no published moisture sensitivity level (MSL Not Applicable), indicating it is designed for industrial enclosure mounting without special moisture protection or conformal coating. In food processing or pharmaceutical environments requiring washdown with pressurized water or steam, the LCE01C604480A requires a sealed NEMA 4X stainless-steel or polycarbonate enclosure rated for direct spray and humidity. The chassis-mount design of the LCE01C604480A means the coil terminals, contact bridges, and arcing surfaces are exposed if mounted directly to a panel face; moisture ingress can cause coil leakage currents, contact corrosion, and electrical tracking. For washdown duty, mount the LCE01C604480A inside a sealed enclosure with drain holes and silica-gel desiccant packs to manage condensation, or specify a sealed IP67 contactor variant if available. Additionally, stainless-steel screw terminals or hermaphroditic connectors are recommended for the LCE01C604480A to prevent corrosion of the connection points in high-humidity environments.
What is the coil inrush current and steady-state power draw of the LCE01C604480A, and how does this affect UPS or generator sizing?
The LCE01C604480A draws 248 VA steady-state coil power at nominal 460–480 VAC, which translates to approximately 0.52–0.54 amperes of continuous coil current. However, at pickup, electromagnetic inrush current typically reaches 3–5 times steady-state for 50–100 milliseconds, meaning the LCE01C604480A can draw 1.5–2.7 amperes during energization. For UPS or generator sizing, the 248 VA steady-state rating is used for continuous runtime calculations, while the inrush current must be checked against the UPS inverter peak current capacity or generator transient overload rating. A typical UPS or generator sized for 250–300 VA continuous can handle the LCE01C604480A without derating; however, if multiple LCE01C604480A units are energized simultaneously (e.g., a bank of three contactors in a substation), the combined inrush of 1.5–2.7 A per unit × 3 units = 4.5–8.1 amperes may exceed the transient capacity of undersized backup power, causing voltage sag or inverter shutdown. Phase-staggered energization (using logic sequencing with 200–500 ms delays between coil commands) can mitigate simultaneous inrush for the LCE01C604480A in multi-contactor systems.
How does the LCE01C604480A perform compared to a solid-state relay (SSR) for switching low-inrush DC loads in control circuits?
The LCE01C604480A is an electromechanical contactor rated for 600 VAC AC switching and is not suitable for direct DC switching; its contact arcing characteristics and must-break voltage specifications are optimized for AC zero-crossing behavior where arc extinction occurs naturally. Solid-state relays (SSRs), by contrast, use semiconductor switches (triacs or transistors) and excel at low-inrush DC and AC loads with soft-start capability and noise immunity. For low-current DC pilot circuits (e.g., 24 VDC control signals), an SSR eliminates the mechanical wear and acoustic noise of the LCE01C604480A; however, the LCE01C604480A's 30 A AC rating far exceeds typical SSR load capacity (most SSRs max out at 10–20 A), and the LCE01C604480A provides galvanic isolation between coil and contacts, whereas SSRs introduce a small leakage current in the off state. For mixed applications requiring both AC power switching (motor circuits) and DC pilot control, the LCE01C604480A handles the power stage while an SSR or logic relay manages the low-voltage interlock circuits; this hybrid approach leverages the robustness of the LCE01C604480A where it excels (high-current AC) and the precision of SSRs where they excel (low-current, noise-sensitive DC).
What pre-commissioning electrical tests should be performed on a newly installed LCE01C604480A before connecting the main power load?
Before energizing the main circuit, verify the LCE01C604480A installation with the following tests: (1) megohm test the coil-to-ground resistance at 500 VDC for at least 10 seconds to confirm no insulation breakdown (acceptable resistance > 10 megohms); (2) measure coil resistance with an ohmmeter at room temperature to establish a baseline for future diagnostics (typical 150–250 ohms for a 460 VAC coil); (3) with power de-energized, manually cycle the LCE01C604480A armature by hand to verify smooth mechanical motion and audible contact engagement; (4) apply nominal control voltage to the LCE01C604480A and listen for a crisp click, confirming coil pickup, then release and verify the contactor drops out cleanly; (5) use a clamp meter to measure coil current during pickup and steady state—inrush should be 2–3 amperes and steady state should match the 248 VA rating; (6) verify continuity of all four NO contacts of the LCE01C604480A using a multimeter with power off, and verify that all six NC contacts open (show infinite resistance) when the LCE01C604480A is energized. If coil resistance is low (< 100 ohms), insulation is poor, or contacts do not operate as expected, do not energize the main load until the LCE01C604480A is inspected or replaced.
Can the LCE01C604480A be retrofitted into an older panel that used a smaller contactor, or are mechanical compatibility issues likely?
The LCE01C604480A is a chassis-mount contactor with a larger footprint than older three-phase starters, so physical retrofit into a legacy panel depends on available space and terminal layout. The LCE01C604480A's screw-terminal block and bolt-down mounting feet are standard industrial practice, but the frame size and depth of the LCE01C604480A (typically 100–120 mm width, 80–100 mm depth) may not fit older compact relay sockets or DIN-rail mounting slots. Before attempting a retrofit, obtain the mechanical drawing of the LCE01C604480A and verify that: (1) the chassis-mount footprint fits the available panel cut-out, (2) coil terminal clearance allows room for wire connections, (3) the contact terminal arrangement of the LCE01C604480A aligns with the existing wire routing (especially if the older panel has fixed conduit runs), and (4) the 248 VA coil power draw does not exceed the capacity of the existing control transformer (older panels often use 50–100 VA transformers). If the LCE01C604480A does not fit mechanically, a DIN-rail mounted contactor from the same Siemens series may be a compatible option; however, retrofitting usually requires re-terminating multiple control wires and testing the full interlock chain to ensure the LCE01C604480A operates correctly within the existing logic sequence.

Parts with Similar Specifications

The three parts on the right have similar specifications to Siemens LCE01C604480A

Product Attribute LCE01C605480A LCE01C603480A LCE01C604240A LCE01C604600A
Part Number LCE01C605480A LCE01C603480A LCE01C604240A LCE01C604600A
Manufacturer Siemens Siemens Siemens Siemens
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Termination Style - - - -
Must Operate Voltage - - - -
Must Release Voltage - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Contact Material - - - -
Coil Power - - - -
Coil Resistance - - - -
Switching Voltage - - - -
Features - - - Simultaneous Sampling
Mounting Type - Surface Mount Through Hole Surface Mount
Coil Voltage - - - -
Series - - - -
Contact Rating (Current) - - - -
Contact Form - - - -

LCE01C604480A Datasheet PDF

Download LCE01C604480A pdf datasheets and Siemens documentation for LCE01C604480A - Siemens.

Datasheets
LCE01C604480A.pdf

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LCE01C604480A Image

LCE01C604480A

Siemens
98D-LCE01C604480A

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