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HE-S Relays

The application examples on this website are for reference to verify on the actual device before using.

Compact size 2a and 2a1b 35A power relays for energy management and industrial equipment

HE-S
RoHS規格 UL C-UL Recognaized VDE HOUSE MARK

UL/C-UL , VDE , TV Approved
CSA standard certified by C-UL

[Protective construction] Flux-resistant

Please refer to "the latest product specifications" when designing your product.
Please refer to "Cautions For Use" in the catalog, and "Related Information" on our website.

Features

1.High-capacity and long life 35 A 277 V AC 5×10⁴(long life type)

Expected electrical life (resistive load)

Form A contact Standard type Long life type
35 A 277 V AC 3×10⁴ 5×10⁴
30 A 220 V AC 10⁵
20 A 277 V AC 10⁵ 2×10⁵

2.Compact size

3.Low operating power : 1,880 mw (holding power : 170 mw)

Reduced coil holding voltage* contributes to saving energy of equipment
The coil holding voltage can be reduced up to 30% V of the rated coil voltage.
This equals to operating power of approximately 170 mW, which contributes equipment energy savings.
* Coil holding voltage is the coil voltage after 100 ms from the applied rated coil voltage.

4.Contact gap : 3.2 mm (VDE0126 copmliant)

Contact gap: 3.2 mm
Compliant with European photovoltaic standard VDE0126 Compliant with EN61810-1 2.5 kV surge withstand voltage (between contacts)

Contact gap (initial)

Form A contact Min. 3.2 mm each contact
Form B contact Min. 0.7 mm
Min. 0.5 mm (When Form A contact welded)

5.Mirror contact mechanisms : Compliant with EN60947-4-1 mirror contact

Detection of main contact welding makes it possible to construct a safety circuit.
・Designed so that Form A contact and Form B contact will not close at the same time.
・When Form A contact welded, Form B contact gap of at least 0.5 mm is maintained.

Note : Form B contact, when used to monitor the condition of Form A contact, can beused exclusively as an auxiliary contact.
Conditions Normal operation When Form A
contact welded
Non-excitation Excitation Non-excitation
Mirror contact
mechanisms
Non-excitation Excitation Non-excitation

6.Insulation distance (initial)

Between Form A contact and coil Min.11.0 mm (Clearance/Creepage)
Between Form B contact and coil Min.  3.2 mm (Clearance/Creepage)
Between Form A contact sets Min.  8.2 mm (Clearance/Creepage)
Between Form A contact and Form B contact Min.12.8 mm (Clearance/Creepage)

Typical Applications

1.Photovoltaic power generation system

2.UPS (Uninterruptible power supply)

3.Inverter

4.Industrial air conditioner

5.Industrial equipment

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